US3399397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sending and receiving a signal on an a-c line
Assignee: Individual
•
Filing: 1966-01-07
•
Granted: 1968-08-27
•
Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 Josephson Elliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; H02J13/1315; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y02E; Y02E60/00; Y04; Y04S; Y04S10/00; Y04S10/50; Y04S10/52; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2777057A
Cited
US3049677A
Cited
US3011102A
Cited
US3003121A
Cited
US3114882A
Cited
US3105160A
Cited
US3284791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |