Patent US3143909A successfully refreshed from Google Patents.
US3143909A
Expired / Lapsed
US
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Cutting device
Assignee: Individual
•
Filing: 1963-03-11
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Granted: 1964-08-11
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Ehlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:31
CPC Classifications
B; B23; B23D; B23D17/00; B23D23/00; Y; Y10; Y10T; Y10T83/00; Y10T83/222; Y10T83/869; Y10T83/8798; Y10T83/8812; Y10T83/8815
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE348581C
Cited
US938741A
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US1058134A
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US1067688A
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US1081974A
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US1116752A
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US1162879A
Cited
US1137093A
Cited
US1506273A
Cited
US2087124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |