Patent US2931401A successfully refreshed from Google Patents.
US2931401A
Expired / Lapsed
US
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Trim saw apparatus
Assignee: Changewood Corp
•
Filing: 1954-03-12
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Granted: 1960-04-05
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Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Robert D Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:18
CPC Classifications
B; B25; B25B; B25B11/00; B25B11/005; B23; B23D; B23D47/00; B23D47/02; B23D47/025; B23D47/04; B27; B27B; B27B5/00; B27B5/02; B27B5/06; B27B5/061; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2209; Y10T83/2211; Y10T83/444; Y10T83/4493; Y10T83/647; Y10T83/6476; Y10T83/6489; Y10T83/6491; Y10T83/654; Y10T83/748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |