US2656442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc extinguishing electrical switch apparatus
Assignee: Allen Bradley Co LLC
•
Filing: 1950-11-13
•
Granted: 1953-10-20
•
Expires: 1970-11-13
Abstract
No abstract record available.
Inventors
- 👤 Lynn H Matthias
- 👤 Petersen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:59
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1868442A
Cited
US2239031A
Cited
US2240007A
Cited
US2244061A
Cited
US2575730A
Cited
US2551822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |