US2629946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grading or dozing device
Assignee: Individual
•
Filing: 1947-06-06
•
Granted: 1953-03-03
•
Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Mitchell H Ewers
- 👤 Burnice F Haney
- 👤 Theodore E Ewers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:47
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2412574A
Cited
US880394A
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US1460022A
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US1469734A
Cited
US1548238A
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US1967379A
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US1977817A
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US2057326A
Cited
US2160596A
Cited
US2224725A
Cited
GB536741A
Cited
US2452408A
Cited
US2434818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |