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US2709223A
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US
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Assignee: Polaroid Corp
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Filing: 1951-05-19
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Granted: 1955-05-24
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Expires: 1971-05-19
Abstract
No abstract record available.
Inventors
- 👤 Albert J Bachelder
- 👤 Jr William J Mccune
- 👤 Otto E Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:23
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US653383A
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US1166797A
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US1449970A
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US2056279A
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US2371843A
Cited
US2544268A
Cited
US2539254A
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US2562453A
Cited
US2590891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |