US3031693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marker buoy
Assignee: AIRMARINE DEV CORP
•
Filing: 1955-08-29
•
Granted: 1962-05-01
•
Expires: 1975-08-29
Abstract
No abstract record available.
Inventors
- 👤 Harold L Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:27
CPC Classifications
B; B63; B63C; B63C7/00; B63C7/26; B63B; B63B22/00; B63B22/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1079500A
Cited
AT68632B
Cited
US1537988A
Cited
US1677450A
Cited
US1701927A
Cited
US1772674A
Cited
US2216871A
Cited
US2192450A
Cited
US2451475A
Cited
US2463191A
Cited
US2580639A
Cited
US2675143A
Cited
US2646019A
Cited
US2752615A
Cited
US2723404A
Cited
US2830309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |