US3064611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pontoons
Assignee: BROWN HUTCHINSON IRON WORKS
•
Filing: 1961-02-23
•
Granted: 1962-11-20
•
Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Darrell G Engle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:20
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/40; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1021294A
Cited
US1263899A
Cited
US1854992A
Cited
US2725027A
Cited
US2724358A
Cited
US2960957A
Cited
US2984845A
Cited
US3025537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |