Patent US2535439A successfully refreshed from Google Patents.
US2535439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saw sharpener
Assignee: Individual
•
Filing: 1949-05-27
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Granted: 1950-12-26
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Expires: 1969-05-27
Abstract
No abstract record available.
Inventors
- 👤 Mcewan James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:47
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/08; B23D63/12; B23D63/005; Y; Y10; Y10T; Y10T408/00; Y10T408/52; Y10T408/54; Y10T74/00; Y10T74/14; Y10T74/1494
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US295133A
Cited
US385693A
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US1167612A
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US1284109A
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US2067179A
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US2213413A
Cited
US2341099A
Cited
US2410828A
Cited
US2394202A
Cited
US2459233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |