US1980685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine motor
Assignee: JOHNSON BROTHERS ENGINEERING C
•
Filing: 1931-08-17
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Granted: 1934-11-13
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Expires: 1951-08-17
Abstract
No abstract record available.
Inventors
- 👤 Harry L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:29
CPC Classifications
B; B63; B63H; B63H20/00; B63H20/08; B63H20/10; B63H20/02; B63H20/12; B63H20/14; B63H20/22; B63H20/24; B63H20/245; B63H20/28; B63H20/285
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) | 1937-11-12 | 1938-05-14 | 1938-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-11-12 | 1942-05-14 | 1942-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-11-12 | 1946-05-14 | 1946-11-13 | $7700.00 | Window Closed / Lapsed |