US3340786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure ammonia development device
Assignee: Individual
•
Filing: 1965-04-05
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Granted: 1967-09-12
•
Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Elwood H Storm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A DEVELOPER DEVICE FOR APPLYING A GAS TO A DISCRETE FILM AREA, THE COMBINATION COMPRISING: A FILM DEVELOPING PLATEN WITH A FILM SEAL, SAID SEAL BEING SHAPED TO ENCLOSE SAID FILM AREA, A CLOSURE PLATEN OPERATIVE TO HOLD SAID FILM AGAINST SAID SEAL, A DEVELOPMENT CHAMBER FORMED BY SAID DEVELOPING PLATEN, SAID DISCRETE FILM AREA AND SAID SEAL, AND AIR ENTRAPMENT CAVITY, FIRST PORTING MEANS FOR INTRODUCING GAS INTO SAID DEVELOPMENT CHAMBER, AND SECOND PORTING MEANS PASSING THROUGH SAID SEAL INTERCONNECTING SAID DEVELOPMENT CHAMBER AND SAID AIR ENTRAPMENT CAVITY, SAID SECOND PORTING MEANS POSITIONED RELATIVE TO SAID FIRST PORTING MEANS SUCH THAT WHEN SAID SEAL IS IN CONTACT WITH SAID FILM AREA AND PRESSURIZED GAS IS INTRODUCED INTO SAID DEVELOPMENT CHAMBER, A PORTION OF THE ENTRAPPED AIR IS FORCED THROUGH SAID SECOND PORTING MEANS INTO SAID AIR ENTRAPMENT CAVITY.
Claim 2
Dependent Claim
140 words
IN A DEVELOPER DEVICE FOR APPLYING A GAS TO A DISCRETE FILM AREA, THE COMBINATION COMPRISING: A FILM DEVELOPING PLATEN WITH A FILM SEAL, SAID SEAL BEING SHAPED TO ENCLOSE SAID FILM AREA, A CLOSURE PLATEN OPERATIVE TO HOLD SAID FILM AGAINST SAID SEAL, A DEVELOPMENT CHAMBER FORMED BY SAID DEVELOPING PLATEN, SAID DISCRETE FILM AREA AND SAID SEAL, AND AIR ENTRAPMENT CAVITY, FIRST PORTING MEANS FOR INTRODUCING GAS INTO SAID DEVELOPMENT CHAMBER, AND SECOND PORTING MEANS PASSING THROUGH SAID SEAL INTERCONNECTING SAID DEVELOPMENT CHAMBER AND SAID AIR ENTRAPMENT CAVITY, SAID SECOND PORTING MEANS POSITIONED RELATIVE TO SAID FIRST PORTING MEANS SUCH THAT WHEN SAID SEAL IS IN CONTACT WITH SAID FILM AREA AND PRESSURIZED GAS IS INTRODUCED INTO SAID DEVELOPMENT CHAMBER, A PORTION OF THE ENTRAPPED AIR IS FORCED THROUGH SAID SECOND PORTING MEANS INTO SAID AIR ENTRAPMENT CAVITY.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |