Patent US3266345A successfully refreshed from Google Patents.
US3266345A
Expired / Lapsed
US
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Pipe facing tool
Assignee: Chevron USA Inc
•
Filing: 1963-10-01
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Granted: 1966-08-16
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Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Carl S Weisner
- 👤 Thomas F Brudenell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:00
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/16; B23B5/167; B23B5/168; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/892; Y10T408/8923; Y10T408/909; Y10T82/00; Y10T82/25; Y10T82/2522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US794989A
Cited
US2362036A
Cited
US2478310A
Cited
US2470392A
Cited
US3088202A
Cited
US3115054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |