Radiant energy – Invisible radiation responsive nonelectric signalling – Luminescent device
Patent
1977-08-01
1979-06-05
Church, Craig E.
Radiant energy
Invisible radiation responsive nonelectric signalling
Luminescent device
250481, G03D 1308
Patent
active
041574745
ABSTRACT:
An improved x-ray film cassette including a film support plate and a resilient concave-convex window member formed of a highly x-ray transparent material. The convex side of the window member is positioned facing the film supporting plate so that when the cassette is loaded with film, the window member is deformed into a substantially flat shape and the film is clamped over its entire surface area between the window member and the support plate.
REFERENCES:
patent: 3703272 (1972-11-01), Lareau
patent: 3897345 (1975-07-01), Foster
patent: 3947686 (1976-03-01), Cooper
patent: 3958125 (1976-05-01), Zechmair
patent: 4032790 (1977-06-01), Nakamura
Cantu Arthur M.
Koontz Paul G.
Wright Richard L.
Church Craig E.
Hipoint Research, Inc.
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