Patent US2636283A successfully refreshed from Google Patents.
US2636283A
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US
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Compass crystal for watches
Assignee: I D WATCH CASE CO Inc
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Filing: 1951-03-06
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Granted: 1953-04-28
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Expires: 1971-03-06
Abstract
No abstract record available.
Inventors
- 👤 Dinstman Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:49
CPC Classifications
G; G04; G04B; G04B47/00; G04B47/06; G04B47/065; G04B39/00; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR384308A
Cited
US1098851A
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US1819310A
Cited
US2379053A
Cited
US2446568A
Cited
GB582691A
Cited
GB583012A
Cited
US2429149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |