US3200357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer coil construction
Assignee: HK Porter Co Inc
•
Filing: 1962-08-23
•
Granted: 1965-08-10
•
Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Olsen Willy
- 👤 Howard D Tindall
- 👤 William M Pahel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:38
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2866; H01F41/00; H01F41/02; H01F41/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1041293A
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US876899A
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US1507962A
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US2006406A
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US1961783A
Cited
US2161192A
Cited
US2269678A
Cited
US2998583A
Cited
US3071845A
Cited
US3078411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |