Patent EP0176711A1 successfully refreshed from Google Patents.
US2914997A
Expired / Lapsed
US
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Combined range and view finder for cameras
Assignee: Polaroid Corp
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Filing: 1956-10-03
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Granted: 1959-12-01
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Expires: 1976-10-03
Abstract
No abstract record available.
Inventors
- 👤 David S Grey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:44
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307512A
Cited
US741102A
Cited
GB190715199A
Cited
US2089703A
Cited
GB559140A
Cited
CH314355A
Cited
DE933132C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |