Patent US2697457A successfully refreshed from Google Patents.
US2697457A
Expired / Lapsed
US
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Manually portable brush cutting power tool
Assignee: BRUSHMASTER SAW Inc
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Filing: 1952-07-23
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Granted: 1954-12-21
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Expires: 1972-07-23
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:01
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/90; A01D34/902; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7755
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE582131C
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US1116995A
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US1124552A
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US1533974A
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US2490255A
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US2504880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |