US1249486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunken-ship-locating device.
Assignee: Individual
•
Filing: 1917-05-31
•
Granted: 1917-12-11
•
Expires: 1937-05-31
Abstract
No abstract record available.
Inventors
- 👤 Lewis Polachek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:27
CPC Classifications
B; B63; B63C; B63C7/00; B63C7/26; B63B; B63B2205/00; B63B2205/02; B63B2205/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1920-12-10 | 1921-06-11 | 1921-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-10 | 1925-06-11 | 1925-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-10 | 1929-06-11 | 1929-12-11 | $7700.00 | Window Closed / Lapsed |