Patent US2407945A successfully refreshed from Google Patents.
US2407945A
Expired / Lapsed
US
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Apparatus for testing waterproof watchcases
Assignee: Hamilton Watch Co
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Filing: 1946-02-14
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Granted: 1946-09-17
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Expires: 1966-02-14
Abstract
No abstract record available.
Inventors
- 👤 Jr William Ogle Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:55
CPC Classifications
G; G04; G04D; G04D7/00; G04D7/006; G04D7/007; G01; G01M; G01M3/00; G01M3/02; G01M3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-09-16 | 1950-03-18 | 1950-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-16 | 1954-03-18 | 1954-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-16 | 1958-03-18 | 1958-09-17 | $7700.00 | Window Closed / Lapsed |