US2792471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air gap arrester unit
Assignee: Reliable Electric Co
•
Filing: 1954-04-22
•
Granted: 1957-05-14
•
Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Donald L Baxter
- 👤 George C Motsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:40
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412845A
Cited
US1987575A
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US2295320A
Cited
US2469215A
Cited
US2551858A
Cited
US2619518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |