US2453309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane type hydraulic motor
Assignee: Oilgear Co
•
Filing: 1943-03-15
•
Granted: 1948-11-09
•
Expires: 1963-03-15
Abstract
No abstract record available.
Inventors
- 👤 James K Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/08; B23; B23D; B23D7/00; B23D7/10; B23Q; B23Q5/00; B23Q5/02; B23Q5/027; B23Q5/033; F; F04; F04C; F04C14/00; F15; F15B; F15B15/00; F15B15/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US895491A
Cited
US1100004A
Cited
US1192233A
Cited
US1354777A
Cited
US1572576A
Cited
US1927040A
Cited
US1921048A
Cited
US1940918A
Cited
US2255781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |