US2713157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fault detecting and indicating system
Assignee: RCA Corp
•
Filing: 1952-04-29
•
Granted: 1955-07-12
•
Expires: 1972-04-29
Abstract
No abstract record available.
Inventors
- 👤 John A Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1443165A
Cited
US1699759A
Cited
GB264472A
Cited
GB280214A
Cited
DE562264C
Cited
US2207743A
Cited
US2484374A
Cited
US2578447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |