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Patent US1803933A successfully refreshed from Google Patents.
US1803933A
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Hydraulic driving mechanism
Assignee: Individual
•
Filing: 1928-04-16
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Granted: 1931-05-05
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Expires: 1948-04-16
Abstract
No abstract record available.
Inventors
- 👤 George W Dooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86566; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87861; Y10T137/87909
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) | 1934-05-04 | 1934-11-03 | 1935-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-04 | 1938-11-03 | 1939-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-04 | 1942-11-03 | 1943-05-05 | $7700.00 | Window Closed / Lapsed |