Patent US2252156A successfully refreshed from Google Patents.
US2252156A
Expired / Lapsed
US
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Pressure drive mechanism
Assignee: Individual
•
Filing: 1939-09-20
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Granted: 1941-08-12
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Expires: 1959-09-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:45
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/158; B; B62; B62M; B62M1/00; B62M1/18; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1511; Y10T74/1526; Y10T74/1529; Y10T74/1531; Y10T74/18; Y10T74/18888
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |