US2171406A
Expired / Lapsed
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Spiral rolling generating process for bevel gears and apparatus therefor
Assignee: FIRM W FERD KLINGELNBERG SOHNE
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Filing: 1937-03-19
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Granted: 1939-08-29
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Expires: 1957-03-19
Abstract
No abstract record available.
Inventors
- 👤 Schicht Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:21
CPC Classifications
B; B23; B23F; B23F9/00; B23F9/08; B23F9/082; B23F9/084; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10159; Y10T409/101749; Y10T409/101908; Y10T409/102544; Y10T409/103339; Y10T409/103498
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) | 1942-08-28 | 1943-02-27 | 1943-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-28 | 1947-02-27 | 1947-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-28 | 1951-02-27 | 1951-08-29 | $7700.00 | Window Closed / Lapsed |