US2729033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hobbing type apparatus and method for grinding gears
Assignee: General Electric Co
•
Filing: 1952-12-15
•
Granted: 1956-01-03
•
Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Andrew H Prucknicki
- 👤 Frank P Hennessy
- 👤 William J Berrigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:36
CPC Classifications
B; B23; B23F; B23F5/00; B23F5/02; B23F5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US31078A
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US692177A
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US1036199A
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US953059A
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US1997228A
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US2108547A
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US2307238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |