US3499129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line tension high voltage circuit interrupter
Assignee: Usco Power Equipment Corp
•
Filing: 1967-11-13
•
Granted: 1970-03-03
•
Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Leonard A Hulteen
- 👤 William H Gilliland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:32
CPC Classifications
H; H01; H01H; H01H31/00; H01H31/26; H01H31/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1712432A
Cited
US2439164A
Cited
US2692315A
Cited
FR1121187A
Cited
GB911001A
Cited
US3164694A
Cited
US3300599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |