Patent US2520875A successfully refreshed from Google Patents.
US2520875A
Expired / Lapsed
US
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Flexible face hand planing machine
Assignee: ERNEST IMFELD
•
Filing: 1947-03-26
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Granted: 1950-08-29
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Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 Birchmeier Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:51
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/02; B; B23; B23D; B23D57/00; B23D57/0076; B27; B27C; B27C1/00; B27C1/10; Y; Y10; Y10T; Y10T408/00; Y10T408/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US242740A
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US1283736A
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US1281207A
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US1296910A
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US1457492A
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US1727383A
Cited
US1663486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |