US3459548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scavengers for oxidized developing agent
Assignee: Polaroid Corp
•
Filing: 1967-07-24
•
Granted: 1969-08-05
•
Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Stanley M Bloom
- 👤 Paul S Huyffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:44
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2336327A
Cited
US2403721A
Cited
US2675314A
Cited
US2710801A
Cited
US2728661A
Cited
US3174862A
Cited
US3180734A
Cited
US3384484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |