Patent US1905277A successfully refreshed from Google Patents.
US1905277A
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Method of making spline couplings
Assignee: Individual
•
Filing: 1931-08-03
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Granted: 1933-04-25
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Expires: 1951-08-03
Abstract
No abstract record available.
Inventors
- 👤 Otto F Ewert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:52
CPC Classifications
B; B23; B23F; B23F5/00; B23F5/20; B23F5/22; B23F15/00; F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/092; F16D1/10; F16D1/108; F16B; F16B2200/00; F16B2200/20; F16B2200/205; F16D2001/103; F16D2250/00; F16D2250/003; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7026; Y10T403/7028; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10159; Y10T409/101749
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-04-24 | 1936-10-24 | 1937-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-24 | 1940-10-24 | 1941-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-24 | 1944-10-24 | 1945-04-25 | $7700.00 | Window Closed / Lapsed |