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Patent US2582929A successfully refreshed from Google Patents.
US2582929A
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Gear hardening machine
Assignee: New Britain Machine Co
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Filing: 1947-01-15
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Granted: 1952-01-15
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Expires: 1967-01-15
Abstract
No abstract record available.
Inventors
- 👤 George O Gridley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:28
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/32; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5165; Y10T74/00; Y10T74/14; Y10T74/1406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768159A
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US2180038A
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US2274005A
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US2304148A
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US2264752A
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US2398085A
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US2361995A
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US2428303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |