Patent US3380339A successfully refreshed from Google Patents.
Patent US3473924A successfully refreshed from Google Patents.
US3473924A
Expired / Lapsed
US
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Novel photographic products and processes
Assignee: Polaroid Corp
•
Filing: 1967-12-11
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Granted: 1969-10-21
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/73; C07D471/00; C07D471/12; C07D471/14; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C8/00; G03C8/02; G03C8/04; G03C8/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2324123A
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US2353754A
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US2860976A
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US3173786A
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US3265498A
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US3212893A
Cited
US3271154A
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US3307947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |