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Patent US2611321A successfully refreshed from Google Patents.
US2611321A
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US
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Vessel and fluid propelling device
Assignee: Individual
•
Filing: 1946-08-29
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Granted: 1952-09-23
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Expires: 1966-08-29
Abstract
No abstract record available.
Inventors
- 👤 Homer J Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/04; B63H11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE101702C
Cited
US621719A
Cited
US842278A
Cited
US966491A
Cited
US1109155A
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US2456133A
Cited
US2407901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |