Patent US20030108007A1 successfully refreshed from Google Patents.
US2364565A
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US
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Apparatus for locally hardening gears, shafts, etc.
Assignee: Fellows Gear Shaper Co
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Filing: 1939-11-10
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Granted: 1944-12-05
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Expires: 1959-11-10
Abstract
No abstract record available.
Inventors
- 👤 Stubbs Everard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:40
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/08; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2564
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) | 1947-12-05 | 1948-06-05 | 1948-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-12-05 | 1952-06-05 | 1952-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-12-05 | 1956-06-05 | 1956-12-05 | $7700.00 | Window Closed / Lapsed |