It took ten people to pull the 13-foot by 13-foot solid wood frame off Amanda Telfer, 44, which was blown over in the freak accident.
The frame was propped up against a wall as workmen, for Westgreen Construction Ltd, installed windows in a new six-storey office block off Oxford Street last Thursday.
The "extremely talented lawyer" who was "much admired", her colleagues have said, was an intellectual property and media consultant at Keystone Law.
She joined the firm in 2005 after working as a senior legal counsel at Random House and as a litigator at Denton Wilde Sapte, both based in London.
She was also a freelance consultant for human rights campaign group Reprieve UK for five years where she worked with Brits facing the death penalty in America.
The part-time playwright studied at Maths and Philosophy at Manchester University before gaining her law qualification at BPP Law School in London.
Mr May said she was identified by her father who confirmed she was "a single woman, a solicitor", living in Bermondsey.
Coroners officer Barry May told Westminster Coroner's Court today: "Amanda Barrie Telfer died on August 30 this year. She was walking along Hanover Street.
"On the pavement there were two window frames weighing approximately half a tonne each that had been propped against a wall of an office building.
"AS she walked past a window frame fell on her pinning her to the ground. Members of the public removed the frames and started CPR."
It was confirmed that "a gust of wind caused the frame to fall over".
The horrified shoppers looked as paramedics tried desperately to save Ms Telfer, who had been walking along eating a banana when the tragedy struck at 11.30am.
Despite the efforts of an air ambulance, two cycle responders, two ambulance crews and members of the hazardous area response team she was pronounced dead on the pavement.
Police are still investigating the death alongside the Health and Safety Executive (HSE).
A post-mortem examination was carried out on Saturday and gave the cause of death as blunt force trauma.
Coroner Dr Fiona Wilcox said: "I formally open and adjourn the inquest into the death of Amanda Barrie Telfer to allow the police and the HSE to undertake the investigation.
"This investigation will take a considerable amount of time, therefore instead of a hearing date, as at the moment we still do not know whether charges will be brought in this case, I adjourn for an internal review."
Floral tributes have been left, including a note reading 'sorry we couldn't save you', just metres from where the frame that killed her lay for several days as police cordoned off the area.
Speaking from Guantanamo Bay, Clive Stafford Smith, the founder of Reprieve, told London's Evening Standard that Ms Telfer's death was "tragic".
"I heard about poor Amanda a couple of days ago - what a tragedy," he told the paper.
"She was a volunteer at Reprieve, and an excellent one, and then very kindly 'legalled' my new book, so it was a pleasure to have the chance to catch up with her then.
"How very sad it was to hear, and my heart goes out to her family."
Keystone Law, where Ms Telfer worked since 2005 specialising in libel, defamation and privacy law, said she was "an extremely talented lawyer, much admired by her clients and colleagues".
"Amanda was always a pleasure to work with and we shall miss her greatly," it said in a statement on its website.
"Our thoughts are with Amanda's family at this difficult time."
Ms Telfer also worked for the publisher Random House for more than six years, with the company describing her as a "valued and popular consultant lawyer".
"Not only was Amanda a brilliant lawyer whose advice and help could always be relied upon, but she was terrific fun to be around," a spokeswoman said.
"She was held in the highest regard by colleagues for her professional expertise and her warm and approachable style.
"She will be greatly missed by her many friends at Random House and by all who had the privilege of working with her.
"Our thoughts are with her family at this difficult time."
Sinead Martin, Random House's group legal director, said: "Amanda was very special, a thoroughly good person."
The coroners review of progress is expected to take place later this month.