US2446202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heat-treatment
Assignee: Individual
•
Filing: 1941-09-24
•
Granted: 1948-08-03
•
Expires: 1961-09-24
Abstract
No abstract record available.
Inventors
- 👤 Vang Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:50
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C21D1/10; H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/40; H05B6/405; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377574A
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US1171832A
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US1168346A
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US1378187A
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US2024906A
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US2206839A
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US2175607A
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GB467308A
Cited
US2288033A
Cited
US2178201A
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US2179105A
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US2236810A
Cited
US2287540A
Cited
US2287542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |