US2440748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning arrestor for television transmission lines, etc.
Assignee: RCA Corp
•
Filing: 1947-05-01
•
Granted: 1948-05-04
•
Expires: 1967-05-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2404; H01R4/2408; H01C; H01C7/00; H01C7/10; H01C7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1219497A
Cited
US1423742A
Cited
US1552424A
Cited
US1627631A
Cited
US2012342A
Cited
US2419683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |