US2831913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer case grounding pad
Assignee: Wagner Electric Corp
•
Filing: 1951-04-30
•
Granted: 1958-04-22
•
Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 Wilfred A Okenfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2264271A
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US2347897A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |