Card – picture – or sign exhibiting – Photographic transparency viewer – e.g. – x-ray viewer – Hand held slide viewer
Patent
1979-12-26
1981-02-10
Pitrelli, John F.
Card, picture, or sign exhibiting
Photographic transparency viewer, e.g., x-ray viewer
Hand held slide viewer
63 18, G02B 2702
Patent
active
042493307
ABSTRACT:
A pendant type capsule is provided to be worn on the person as jewelry and having within an air and water-tight cavity therewithin a small microfilm containing the medical history or medical and personal characteristics of the person carrying or wearing the jewerly together with a suitable light sensitive backing for or adjacent to the film to provide lighting characteristics, and a lens at the other end of the cavity, with the film and lens fixedly mounted to provide fixed focus for observing the medical history of the person without the necessity of using other devices.
REFERENCES:
patent: 271838 (1883-02-01), Gould
patent: 302722 (1884-07-01), Gould
patent: 3180042 (1965-04-01), Destal
patent: 4122619 (1978-10-01), Kruger
Pelton Russell G.
Pitrelli John F.
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