US3454734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed-gas circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1965-09-22
•
Granted: 1969-07-08
•
Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Robert G Colclaser Jr
- 👤 Russell N Yeckley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:54
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/32; H01H3/46; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/34; H01H33/53; H01H33/56; H01H33/70; H01H33/86; H01H3/34; H01H33/008; H01H33/04; H01H33/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2454586A
Cited
DE1117440B
Cited
US3284602A
Cited
US3275778A
Cited
US3356809A
Cited
US3327082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |