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US2539239A
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Apparatus for testing gear drives by the method of unilateral gear tooth rolling motion control
Assignee: Maag Zahnrader und Maschinen AG
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Filing: 1945-05-11
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Granted: 1951-01-23
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Expires: 1965-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ernst Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:25
CPC Classifications
G; G01; G01M; G01M13/00; G01M13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |