US3534323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer tap for underground applications with pressure plate connection
Assignee: Fargo Mfg Co Inc
•
Filing: 1969-03-06
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Granted: 1970-10-13
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Expires: 1989-03-06
Abstract
No abstract record available.
Inventors
- 👤 Stephen P Becker
- 👤 Henry R Wengen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/04; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306; H01F27/40; Y; Y10; Y10S; Y10S439/00; Y10S439/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |