US4964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mariner s time-compass
Assignee: —
•
Filing: —
•
Granted: 1847-02-09
•
Expires: 1864-02-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:44
CPC Classifications
G; G04; G04B; G04B49/00
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) | 1850-02-08 | 1850-08-10 | 1851-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1854-02-08 | 1854-08-10 | 1855-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1858-02-08 | 1858-08-10 | 1859-02-09 | $7700.00 | Window Closed / Lapsed |