US3488563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground electric power distribution system
Assignee: Kearney National Inc
•
Filing: 1966-03-28
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Granted: 1970-01-06
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 John E Caruthers
- 👤 Robert E Deal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:13
CPC Classifications
H; H02; H02J; H02J3/00; H01; H01F; H01F27/00; H01F27/06; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/5205; H02B; H02B7/00; H02B7/06; H02B7/08; H02G; H02G9/00; H02G9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |