US2476916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistance vacuum furnace
Assignee: Westinghouse Electric Corp
•
Filing: 1945-09-08
•
Granted: 1949-07-19
•
Expires: 1965-09-08
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Rose
- 👤 Dwight L Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:15
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; F; F27; F27D; F27D11/00; F27D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1318031A
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US984119A
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US1063483A
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US1540401A
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CH166593A
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FR46046E
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US2149447A
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US2404060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |