Patent Pending

Year Published: 1974

Format: 16mm

Sound: sound

Description: Shows models of inventions originally left with the U S Patent Office during the first 100 years of its existence when a working model of each invention had to be submitted in order to obtain a patent. Views examples from some of the remaining 200,000 models scattered between the Smithsonian Institute and private collectors.

1 user has this film:
AV Geeks Archive

Related films:

Original permalink · Record added: 2023-02-27 03:11:02