Patent US3410244A successfully refreshed from Google Patents.
US3410244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphibious boat
Assignee: Individual
•
Filing: 1966-02-18
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Granted: 1968-11-12
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Vincent A Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:51
CPC Classifications
B; B63; B63H; B63H16/00; B63H16/08; B63H16/12; B63H5/00; B63H5/02; B63H16/20; B63H2016/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US92808A
Cited
US412391A
Cited
US464227A
Cited
CA496077A
Cited
US1691396A
Cited
US2556619A
Cited
US2910035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |