US2931226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating atmospheric responsive instrument with calibrating adjustment
Assignee: LONGINES WITTNAUER WATCH CO IN
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Filing: 1956-08-23
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Granted: 1960-04-05
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Expires: 1976-08-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard B Sadow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:15
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1638276A
Cited
US1757986A
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US2060984A
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US2093767A
Cited
US2280393A
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FR893842A
Cited
US2743610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |