US3054872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contactor
Assignee: Ward Leonard Electric Co
•
Filing: 1958-11-28
•
Granted: 1962-09-18
•
Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert L Clark
- 👤 Ehmann Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:55
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; H01H50/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB349498A
Cited
US2394090A
Cited
US2475331A
Cited
US2561450A
Cited
US2589167A
Cited
US2523774A
Cited
US2675443A
Cited
GB710452A
Cited
US2719890A
Cited
US2924685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |