Re: Seeking Fritz BUKOFZER, film producer- Paris > Switzerland #france
A search on Google Books for "Fritz BUKOFZER" finds his name mentioned in several books. Perhaps something there may be a clue for you?
Also, there is a very large collection regarding people in the performing arts at The NY Public Library at Lincoln Center.
When the library fully re-opens (still closed to the public due to Covid) than perhaps you can find someone in NYC who can stop by the library and check the index for Fritz BUKOFZER.
I went there years ago and found a surprisingly large folder on a relatively obscure actor and silent film performer that I was researching.
Also, have you checked newspapers for an obituary? The NY Times, for example?