US2451732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave-absorptive gas light valve
Assignee: RCA Corp
•
Filing: 1944-06-15
•
Granted: 1948-10-19
•
Expires: 1964-06-15
Abstract
No abstract record available.
Inventors
- 👤 William D Hershberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:44
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; G; G01; G01R; G01R21/00; G02; G02F; G02F1/00; G02F1/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1894462A
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US1814843A
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US1836558A
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US1954947A
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US2004453A
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US2024737A
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US2155661A
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US2284379A
Cited
US2314764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |