US2870274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical wafer switches
Assignee: Standard Coil Products Co Inc
•
Filing: 1955-05-26
•
Granted: 1959-01-20
•
Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Thias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
H; H03; H03H; H03H5/00; H03H5/003; H01; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2670530A
Cited
GB564085A
Cited
FR907460A
Cited
US2549998A
Cited
US2447718A
Cited
US2561930A
Cited
US2631211A
Cited
US2694756A
Cited
US2594190A
Cited
US2666253A
Cited
US2750459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |