US3478411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction welding stellite facings to valve seats
Assignee: Caterpillar Inc
•
Filing: 1967-10-09
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Granted: 1969-11-18
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Expires: 1987-10-09
Abstract
No abstract record available.
Inventors
- 👤 Alexander Goloff
- 👤 Richard E Hautala
- 👤 Claude F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:27
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/129; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2358090A
Cited
US2514532A
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US3235162A
Cited
US3134169A
Cited
GB1018412A
Cited
US3346947A
Cited
US3372463A
Cited
US3323203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |