US2451769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic system for measuring microwave transmission through a wave guide
Assignee: RCA Corp
•
Filing: 1945-06-11
•
Granted: 1948-10-19
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lowell E Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1985093A
Cited
US2290531A
Cited
US2340594A
Cited
GB548681A
Cited
US2335486A
Cited
US2407075A
Cited
US2410349A
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 |