Patent US3103961A successfully refreshed from Google Patents.
Patent US3421423A successfully refreshed from Google Patents.
US3421423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus
Assignee: Polaroid Corp
•
Filing: 1966-10-21
•
Granted: 1969-01-14
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Rogers B Downey
- 👤 Gerald H Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:15
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A DEMOUNTABLE PRESSURE-ROLL UNIT ADAPTED TO BE MOUNTED ON A CAMERA WHICH INCLUDES COOPERATIVE RETENTIVE LATCHING MEANS THEREFOR AND WHICH IS OF A TYPE FOR ADVANCING A FILM ASSEMBLY EMBODYING A RELEASABLY-CONTAINED PROCESSING SUBSTANCE BETWEEN COMPRESSIVE ELEMENTS OF SAID PRESSURE-ROLL UNIT TO PROVIDE A COMPLETED PHOTOGRAPHIC PRINT, SAID PRESSURE-ROLL UNIT COMPRISING A PAIR OF PRESSURE ROLLS, A GENERALLY-RECTANGULAR HOUSING FORMING THEREWITHIN A CHAMBER AND INCLUDING REAR SURFACE AREAS FOR CONTACTING MATING FORWARD SURFACE AREAS OF SAID CAMERA TO ESTABLISH A CORRECT FRONT-T-REAR LOCATION OF SAID PRESSURE-ROLL UNIT ON SAID CAMERA, FLANGE MEANS INTEGRAL WITH AND PROJECTING FROM SAID HOUSING FOR CONTACTING MATING SIDE HOUSING PORTIONS OF SAID CAMERA TO ESTABLISH A CORRECT LATERAL LOCATION OF SAID PRESSURE-ROLL UNIT ON SAID CAMERA, LATCHING MEANS ADAPTED TO COOPERATE WITH SAID LATCHING MEANS OF SAID CAMERA FOR RELEASABLY HOLDING SAID PRESSURE-ROLL UNIT AT MOUNTED POSITION, AND MEANS MOUNTED IN SAID CHAMBER AND PARTIALLY EXTENDING REARWARDLY THEREFROM FOR MOUNTING SAID PRESSURE ROLLS FOR ROTATION AND PERMITTING SUBSTANTIALLY LINEAR MOVEMENT OF ONE OF SAID PRESSURE ROLLS RELATIVE TO THE OTHER.
Claim 2
Dependent Claim
175 words
A DEMOUNTABLE PRESSURE-ROLL UNIT ADAPTED TO BE MOUNTED ON A CAMERA WHICH INCLUDES COOPERATIVE RETENTIVE LATCHING MEANS THEREFOR AND WHICH IS OF A TYPE FOR ADVANCING A FILM ASSEMBLY EMBODYING A RELEASABLY-CONTAINED PROCESSING SUBSTANCE BETWEEN COMPRESSIVE ELEMENTS OF SAID PRESSURE-ROLL UNIT TO PROVIDE A COMPLETED PHOTOGRAPHIC PRINT, SAID PRESSURE-ROLL UNIT COMPRISING A PAIR OF PRESSURE ROLLS, A GENERALLY-RECTANGULAR HOUSING FORMING THEREWITHIN A CHAMBER AND INCLUDING REAR SURFACE AREAS FOR CONTACTING MATING FORWARD SURFACE AREAS OF SAID CAMERA TO ESTABLISH A CORRECT FRONT-T-REAR LOCATION OF SAID PRESSURE-ROLL UNIT ON SAID CAMERA, FLANGE MEANS INTEGRAL WITH AND PROJECTING FROM SAID HOUSING FOR CONTACTING MATING SIDE HOUSING PORTIONS OF SAID CAMERA TO ESTABLISH A CORRECT LATERAL LOCATION OF SAID PRESSURE-ROLL UNIT ON SAID CAMERA, LATCHING MEANS ADAPTED TO COOPERATE WITH SAID LATCHING MEANS OF SAID CAMERA FOR RELEASABLY HOLDING SAID PRESSURE-ROLL UNIT AT MOUNTED POSITION, AND MEANS MOUNTED IN SAID CHAMBER AND PARTIALLY EXTENDING REARWARDLY THEREFROM FOR MOUNTING SAID PRESSURE ROLLS FOR ROTATION AND PERMITTING SUBSTANTIALLY LINEAR MOVEMENT OF ONE OF SAID PRESSURE ROLLS RELATIVE TO THE OTHER.
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |