Patent US2365956A successfully refreshed from Google Patents.
US2365956A
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US
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Thermally hardening steel
Assignee: Individual
•
Filing: 1940-04-20
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Granted: 1944-12-26
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Expires: 1960-04-20
Abstract
No abstract record available.
Inventors
- 👤 John M Hodge
- 👤 Max W Lightner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:20
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/18; C21D1/19; C21D1/20; C23; C23C; C23C8/00; C23C8/80; C21D2221/00; Y; Y10; Y10S; Y10S148/00; Y10S148/902
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) | 1947-12-26 | 1948-06-26 | 1948-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-12-26 | 1952-06-26 | 1952-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-12-26 | 1956-06-26 | 1956-12-26 | $7700.00 | Window Closed / Lapsed |