US2879404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of controlling high tension electrical circuits
Assignee: Machlett Laboratories Inc
•
Filing: 1956-05-02
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Granted: 1959-03-24
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Expires: 1976-05-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Rogers
- 👤 Gordon F Bavor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/30; H05G1/38; H05G1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2101152A
Cited
US2475197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |