Patent US3477115A successfully refreshed from Google Patents.
US3477115A
Expired / Lapsed
US
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Method of fastening parts by friction welding
Assignee: Caterpillar Inc
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Filing: 1967-03-17
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Granted: 1969-11-11
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Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Eugene R Martin
- 👤 David I Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:40
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/129; B23K20/1295; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB572789A
Cited
US2795039A
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US2942748A
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US3111045A
Cited
US3144710A
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US3184353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |