Radiant energy – Fluent material containment – support or transfer means – With irradiating source or radiating fluent material
Patent
1978-12-13
1980-03-18
Church, Craig E.
Radiant energy
Fluent material containment, support or transfer means
With irradiating source or radiating fluent material
250468, G03B 4116
Patent
active
041941217
ABSTRACT:
Two different areas of a focal trough of a dental arch structure are simultaneously displayed on a radiograph when tubehead-camera assembly of an X-ray machine panoramically scans the dental arch structure. The different areas of the focal trough are obtained when a pair of parallel disposed film holding devices within the camera are caused to travel in proximate relationship to each other at different speeds. The X-rays activate and pass through one film before activating the other immediately therebehind.
REFERENCES:
patent: 3636349 (1972-01-01), Faude
Church Craig E.
Pennwalt Corporation
Suga Arthur M.
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