US3379879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film unit for dental x-ray photography having a self-contained developer means
Assignee: ALBERT P DICKER
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Filing: 1966-04-04
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Granted: 1968-04-23
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Edward T Dicker
- 👤 Albert P Dicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/16; G03D5/00; G03D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A FILM UNIT FOR USE IN X-RAY PHOTOGRAPHY HAVING SELF-CONTAINED MEANS FOR DEVELOPING A PHOTOSENSITIVE FILM AFTER IT HAS BEEN EXPOSED, THE COMBINATION OF AN ELONGATED FLEXIBLE ENVELOPE, OPEN AT ONE END, THE MATERIAL OF WHICH IS OPAQUE TO ORDINARY LIGHT AND AT LEAST ONE SIDE OF WHICH IS PERMEABLE TO X-RAYS AND OTHER RADIOACTIVE RAYS; A PHOTOSENSITIVE FILM, RELATIVELY SMALLER THAN SAID ENVELOPE, RECEIVED THEREIN, IN SPACED APART RELATION TO ITS OPEN END; A PLURALITY OF RUPTURABLE CONTAINERS, EACH CONTAINING A LIQUID FOR THE TREATMENT OF SAID PHOTOSENSITIVE FILM, AFTER IT HAS BEEN EXPOSED, SUPPORTED IN SAID ENVELOPE, BETWEEN SAID PHOTOSENSITIVE FILM AND THE OPEN END OF SAID ENVELOPE AND A PLURALITY OF PULL TABS CONNECTED RESPECTIVELY TO SAID CONTAINERS AND EXTENDING FROM SAID ENVELOPE FOR RUPTURING SAID CONTAINERS.
Claim 2
Dependent Claim
131 words
IN A FILM UNIT FOR USE IN X-RAY PHOTOGRAPHY HAVING SELF-CONTAINED MEANS FOR DEVELOPING A PHOTOSENSITIVE FILM AFTER IT HAS BEEN EXPOSED, THE COMBINATION OF AN ELONGATED FLEXIBLE ENVELOPE, OPEN AT ONE END, THE MATERIAL OF WHICH IS OPAQUE TO ORDINARY LIGHT AND AT LEAST ONE SIDE OF WHICH IS PERMEABLE TO X-RAYS AND OTHER RADIOACTIVE RAYS; A PHOTOSENSITIVE FILM, RELATIVELY SMALLER THAN SAID ENVELOPE, RECEIVED THEREIN, IN SPACED APART RELATION TO ITS OPEN END; A PLURALITY OF RUPTURABLE CONTAINERS, EACH CONTAINING A LIQUID FOR THE TREATMENT OF SAID PHOTOSENSITIVE FILM, AFTER IT HAS BEEN EXPOSED, SUPPORTED IN SAID ENVELOPE, BETWEEN SAID PHOTOSENSITIVE FILM AND THE OPEN END OF SAID ENVELOPE AND A PLURALITY OF PULL TABS CONNECTED RESPECTIVELY TO SAID CONTAINERS AND EXTENDING FROM SAID ENVELOPE FOR RUPTURING SAID CONTAINERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |