US2777371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system with automatic diaphragm return to preselected position
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1952-10-21
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Granted: 1957-01-15
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Schutz Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:38
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/02; G03B9/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US907486A
Cited
US1543208A
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US1791112A
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GB409777A
Cited
US2269401A
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US2311822A
Cited
US2504011A
Cited
FR1003952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |