Patent US2558856A successfully refreshed from Google Patents.
US2558856A
Expired / Lapsed
US
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Photographic developer dispensing element
Assignee: Polaroid Corp
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Filing: 1946-07-08
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Granted: 1951-07-03
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Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:45
CPC Classifications
G; G03; G03D; G03D9/00; G03D9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN COMBINATION, A MAGAZINE AND A PLURALITY OF RELATIVELY STIFF SHEETS OF MATERIAL, EACH OF SAIDD SHEETS HAVING A LEADING EDGE AND A TRAILING EDGE, A PLURALITY CONTAINERS, THERE BEING A CONTAINER ASSOCIATED WITH EACH OF SAID SHEETS, EACH SAID CONTAINER HAVING THEREIN A LIQUID COMPOSITION, A PLURALITY OF FLEXIBLE MEMBERS JOINING SAID CONTAINERS TO SAID SHEETS, THERE BEING A JOINING MEMBER FOR JONING EACH CONTAINER TO ITS ASSOCIATED SHEET, EACH SAID JOINING MEMBER JOINING ITS CONTAINER TO SAID LEADING EDGE OF ITS ASSOCIATED SHEET, SAID
Claim 2
Dependent Claim
86 words
IN COMBINATION, A MAGAZINE AND A PLURALITY OF RELATIVELY STIFF SHEETS OF MATERIAL, EACH OF SAIDD SHEETS HAVING A LEADING EDGE AND A TRAILING EDGE, A PLURALITY CONTAINERS, THERE BEING A CONTAINER ASSOCIATED WITH EACH OF SAID SHEETS, EACH SAID CONTAINER HAVING THEREIN A LIQUID COMPOSITION, A PLURALITY OF FLEXIBLE MEMBERS JOINING SAID CONTAINERS TO SAID SHEETS, THERE BEING A JOINING MEMBER FOR JONING EACH CONTAINER TO ITS ASSOCIATED SHEET, EACH SAID JOINING MEMBER JOINING ITS CONTAINER TO SAID LEADING EDGE OF ITS ASSOCIATED SHEET, SAID
References Cited (Backward Citations)
GB190607521A
Cited
GB190611346A
Cited
DE369146C
Cited
DE370821C
Cited
US1592584A
Cited
US1592379A
Cited
US1945885A
Cited
DE567011C
Cited
US2166643A
Cited
US2214446A
Cited
US2324541A
Cited
US2319560A
Cited
US2405195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |