Patent US2837853A successfully refreshed from Google Patents.
US2837853A
Expired / Lapsed
US
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Photographic transparency mount
Assignee: Polaroid Corp
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Filing: 1955-09-29
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Granted: 1958-06-10
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Bing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:45
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1524797A
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US1633376A
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US2088944A
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US2153149A
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US2220310A
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US2505250A
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US2541575A
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US2697889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |