US1716962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water propulsion device
Assignee: JOHNSON BROTHERS ENGINEERING C
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Filing: 1926-08-25
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Granted: 1929-06-11
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Expires: 1946-08-25
Abstract
No abstract record available.
Inventors
- 👤 Harry L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:39
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/28; B63H20/285; B63H20/08; B63H20/10; B63H20/32; B63H20/34
Claims Analysis
Total Claims: 0
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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) | 1932-06-10 | 1932-12-10 | 1933-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-06-10 | 1936-12-10 | 1937-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-06-10 | 1940-12-10 | 1941-06-11 | $7700.00 | Window Closed / Lapsed |