US3453571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay with convertible switch contact modules
Assignee: Cutler Hammer Inc
•
Filing: 1967-08-24
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Granted: 1969-07-01
•
Expires: 1987-08-24
Abstract
No abstract record available.
Inventors
- 👤 Nobel H Koertge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:03
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/02; H01H50/04; H01H50/041; H01H50/045; H01H50/16; H01H50/18; H01H50/30; H01H50/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3215800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |