US2541050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-pulsing communication system
Assignee: Farnsworth Research Corp
•
Filing: 1945-05-10
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Granted: 1951-02-13
•
Expires: 1965-05-10
Abstract
No abstract record available.
Inventors
- 👤 William S Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1607; H04B1/1623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US954641A
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US1941067A
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US2165062A
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US2055921A
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US2176868A
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US2245652A
Cited
US2369230A
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US2321651A
Cited
US2368778A
Cited
US2381754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |