Patent US2420591A successfully refreshed from Google Patents.
US2420591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow plow
Assignee: Individual
•
Filing: 1945-09-28
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Granted: 1947-05-13
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Expires: 1965-09-28
Abstract
No abstract record available.
Inventors
- 👤 Newton B Frame
- 👤 John W Keim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:11
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04; E01H5/06; E01H5/063
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) | 1950-05-12 | 1950-11-11 | 1951-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-12 | 1954-11-11 | 1955-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-12 | 1958-11-11 | 1959-05-13 | $7700.00 | Window Closed / Lapsed |