US3467835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control switch responsive to superimposed power line frequency
Assignee: Thomas International Corp
•
Filing: 1965-09-08
•
Granted: 1969-09-16
•
Expires: 1985-09-08
Abstract
No abstract record available.
Inventors
- 👤 Rinaldo E De Cola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:15
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2928012A
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US3087440A
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US3119047A
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US3133251A
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US3287722A
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US3334185A
Cited
US3277307A
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US3308311A
Cited
US3337777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |