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US2445150A
Expired / Lapsed
US
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Method of heat-treating a metallic annulus
Assignee: Cleveland Welding Co
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Filing: 1942-11-02
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Granted: 1948-07-13
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Expires: 1962-11-02
Abstract
No abstract record available.
Inventors
- 👤 Homer L Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:48
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/40; C21D1/00; C21D1/62; C21D1/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US443928A
Cited
US1105116A
Cited
GB225333A
Cited
US1711835A
Cited
US1959344A
Cited
US2041029A
Cited
US2044763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |