US2977438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay-contactor
Assignee: Individual
•
Filing: 1959-06-29
•
Granted: 1961-03-28
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Morschel Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:51
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/30; H01H50/305; H01H1/00; H01H1/12; H01H1/14; H01H1/20; H01H50/20; H01H50/22; H01H50/54; H01H50/541; H01H50/545; H01H2050/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2399575A
Cited
US2616998A
Cited
US2889426A
Cited
US2908784A
Cited
US2929899A
Cited
US2884499A
Cited
US2951922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |