Radiant energy – Invisible radiation responsive nonelectric signalling – Luminescent device
Patent
1977-02-10
1978-08-29
Smith, Alfred E.
Radiant energy
Invisible radiation responsive nonelectric signalling
Luminescent device
G03C 516
Patent
active
041106245
ABSTRACT:
A cassette constructed to serve as a film holder for X-ray film or the like. The cassette is a rectangular container or box having a hinged cover, hinged by way of a piano type hinge and having a catch member opposite the hinge for holding the cover in closed position. A light trap is provided around the peripheral edges of the box and cover to make the container light tight. Preferably the hinge and catch members are fabricated from continuous metal strips.
REFERENCES:
patent: 1933652 (1933-11-01), Boldingh
patent: 2103961 (1937-12-01), Wilmanns
patent: 2817020 (1957-12-01), Akers
Grigsby T. N.
Herzig Albert M.
Smith Alfred E.
Walsh Edward C.
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