US2558856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developer dispensing element
Assignee: Polaroid Corp
•
Filing: 1946-07-08
•
Granted: 1951-07-03
•
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 07:42
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
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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 |