US2926562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural range masking means for photoelectric measuring instruments
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1957-05-07
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Granted: 1960-03-01
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Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bretthauer Hermann
- 👤 Madge Joachim
- 👤 Kroger Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4214; G02; G02B; G02B5/00; G02B5/005; G03; G03B; G03B17/00; G03B17/02; G03B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE666777C
Cited
GB439224A
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US2227166A
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DE691440C
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US2241020A
Cited
US2249833A
Cited
US2268105A
Cited
US2387466A
Cited
US2667809A
Cited
US2744200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |