US3484676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firing circuit for controlled rectifier means
Assignee: WEB PRESS ENG Inc
•
Filing: 1968-05-13
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Granted: 1969-12-16
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Expires: 1988-05-13
Abstract
No abstract record available.
Inventors
- 👤 Alan W Wilkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/298; H02P7/2985; H02P3/00; H02P3/06; H02P3/08; H02P3/14; H02P7/281; H02P7/2815; H02P7/285; H02P7/292; H02P7/293; H03; H03F; H03F3/00; H03F3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3281645A
Cited
US3304486A
Cited
US3349312A
Cited
US3319147A
Cited
US3399337A
Cited
US3395334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |