US2643553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw sharpening device
Assignee: Individual
•
Filing: 1952-02-02
•
Granted: 1953-06-30
•
Expires: 1972-02-02
Abstract
No abstract record available.
Inventors
- 👤 Evanoff Boreece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:08
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/08; B23D63/16; B23D63/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US181795A
Cited
US1146705A
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US1557494A
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DE670747C
Cited
US2458058A
Cited
US2490244A
Cited
US2589165A
Cited
US2568062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |