Patent US2932081A successfully refreshed from Google Patents.
US2932081A
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US
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Process for making universal joint
Assignee: Duerkoppwerke GmbH
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Filing: 1957-03-11
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Granted: 1960-04-12
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Witte Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:57
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; B; B29; B29C; B29C45/00; B29C45/14; B29C45/14754; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/208; F16C2220/00; F16C2220/02; F16C2220/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49655; Y10T29/49657; Y10T29/49661; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1798738A
Cited
US1960956A
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US2121277A
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US2252351A
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US2476728A
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US2669491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |