US2977750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing mechanism
Assignee: Hamilton Watch Co
•
Filing: 1957-01-02
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Granted: 1961-04-04
•
Expires: 1977-01-02
Abstract
No abstract record available.
Inventors
- 👤 Philip E Biemiller
- 👤 Kenneth H Schoenrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:59
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |