US2874452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bore finishing tool
Assignee: Individual
•
Filing: 1955-12-07
•
Granted: 1959-02-24
•
Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Earl A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
B; B24; B24B; B24B39/00; B24B39/02; B24B39/023; Y; Y10; Y10T; Y10T29/00; Y10T29/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB194575A
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US1627152A
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US1619479A
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US2043481A
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US2004787A
Cited
GB494481A
Cited
US2170631A
Cited
US2361434A
Cited
US2520126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |