US2850602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay contact arrangement
Assignee: North Electric Co
•
Filing: 1955-05-16
•
Granted: 1958-09-02
•
Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 Lemuel R Breese
- 👤 Dorsey D Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H1/00; H01H1/06; H01H1/12; H01H1/14; H01H1/18
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |