Patent US3481372A successfully refreshed from Google Patents.
US3481372A
Expired / Lapsed
US
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Coil forming method and apparatus
Assignee: Fort Wayne Tool and Die Inc
•
Filing: 1967-05-22
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Granted: 1969-12-02
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert J Eminger
- 👤 Clayton L Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:54
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/04; H02K15/043; B; B21; B21F; B21F3/00; B21F3/02; B21F3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49071; Y10T29/51; Y10T29/5176; Y10T29/53; Y10T29/5313; Y10T29/53143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2736346A
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US2927744A
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US3093339A
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US3147934A
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US3331403A
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US3346021A
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US3387634A
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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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |