Patent US4556978A successfully refreshed from Google Patents.
Patent US2784653A successfully refreshed from Google Patents.
US2784653A
Expired / Lapsed
US
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Photographic apparatus
Assignee: Polaroid Corp
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Filing: 1953-08-27
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Granted: 1957-03-12
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Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Norton T Pierce
- 👤 Philip D Bartlett
- 👤 Herman E Erikson
- 👤 Murry N Fairbank
- 👤 Jr William J Mccune
- 👤 Albert L H Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:33
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |