US3447221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller structure and method of manufacture
Assignee: Polaroid Corp
•
Filing: 1967-06-23
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Granted: 1969-06-03
•
Expires: 1987-06-23
Abstract
No abstract record available.
Inventors
- 👤 John W Odiorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:15
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52; G03B17/28; G03B17/30; G03B17/305; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/4956; Y10T29/49563
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1560524A
Cited
US2230289A
Cited
US2793571A
Cited
US2621374A
Cited
GB779674A
Cited
US2865144A
Cited
US3187409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |