US2590546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treatment of irregular metallic objects
Assignee: Westinghouse Electric Corp
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Filing: 1949-07-25
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Granted: 1952-03-25
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Expires: 1969-07-25
Abstract
No abstract record available.
Inventors
- 👤 Homer F Kincaid
- 👤 John D Graham
- 👤 John A Redmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:49
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/06; C21D1/09; C21D1/10; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |