Patent US1491223A successfully refreshed from Google Patents.
US1491223A
Expired / Lapsed
US
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Clock-synchronizing mechanism
Assignee: Individual
•
Filing: 1922-09-20
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Granted: 1924-04-22
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Expires: 1942-09-20
Abstract
No abstract record available.
Inventors
- 👤 Casner Thaddeus Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:57
CPC Classifications
G; G04; G04C; G04C11/00; G04C11/02; G04C11/023; G04R; G04R20/00; G04R20/20
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) | 1927-04-22 | 1927-10-22 | 1928-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-22 | 1931-10-22 | 1932-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-22 | 1935-10-22 | 1936-04-22 | $7700.00 | Window Closed / Lapsed |