Patent US2501797A successfully refreshed from Google Patents.
US2501797A
Expired / Lapsed
US
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Shovel loader
Assignee: Individual
•
Filing: 1946-05-22
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Granted: 1950-03-28
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Expires: 1966-05-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond M Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:22
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371273A
Cited
US1477136A
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US1687841A
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US2239288A
Cited
US2404820A
Cited
US2415892A
Cited
US2427971A
Cited
US2435098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |