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US2720748A
Expired / Lapsed
US
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Watertight watch-case
Assignee: Individual
•
Filing: 1953-02-26
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Granted: 1955-10-18
•
Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Gisiger Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:41
CPC Classifications
G; G04; G04B; G04B37/00; G04B37/08; G04B37/081; G04B37/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131319A
Cited
US2187863A
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US2155842A
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US2241180A
Cited
US2380215A
Cited
US2465799A
Cited
CH253750A
Cited
GB660365A
Cited
US2621468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |