US2947840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Cutler Hammer Inc
•
Filing: 1958-04-25
•
Granted: 1960-08-02
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Rodney F Park
- 👤 Robert D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:53
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/02; H; H01; H01H; H01H9/00; H01H9/02; H01H9/06; H01H13/00; H01H13/50; H01H13/506; H01H19/00; H01H19/54; H01H19/60; H01H19/635; H01H2300/00; H01H2300/026; H01H2300/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2616009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |