Patent US2887760A successfully refreshed from Google Patents.
US2887760A
Expired / Lapsed
US
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Cutting tool
Assignee: Armstrong Bros Tool Co
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Filing: 1956-05-28
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Granted: 1959-05-26
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 John O Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1666; B23B27/167; Y; Y10; Y10T; Y10T407/00; Y10T407/11; Y10T407/118; Y10T407/22; Y10T407/227; Y10T407/2272; Y10T407/2282; Y10T407/2286; Y10T407/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |