James Schenken wrote:
I'm trying to track down the original patent for the film cassette
used in the pre-M series style Leica cameras. My Leica reference
refers to them as
Film Magazine Model A thru Model D, the latest model before the M
series was released.
A similar cassette was available for Contax cameras as well as for
early model Canon and Nikon camera. The earliest reference in the
patent literature that I can find is a comment within a patent on a
film loading system patented by E. Leitz in 1940 but applied for in
Germany in 1935 ( patent #2205052 )which used the phrase "the film
cassette is of a well known construction ... " The cassette is not
shown in this patent.
It is functionally different from the Kodak patent for the 35mm film
cassette issued at about this time or a little earlier.
Hope this is not too far off topic.
How can asking about a photographic item be off topic on a non specific
photographic forum?
Good luck with your quest.
Bob
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I plan to live forever. So far so good...........
