Patent US2823448A successfully refreshed from Google Patents.
US2823448A
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Gear generating apparatus
Assignee: Klingelnberg GmbH
•
Filing: 1951-03-27
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Granted: 1958-02-18
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Expires: 1971-03-27
Abstract
No abstract record available.
Inventors
- 👤 Krumme Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:37
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/12; B23F21/22; B23F21/223; B23F21/226; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/1705; Y10T407/171
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1415339A
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US1689566A
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US1812384A
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US2129077A
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US2346806A
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US2477153A
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US2508556A
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US2648894A
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DE836423C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |