Patent US3443181A successfully refreshed from Google Patents.
US3443181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive circuit for carriage stepping motor
Assignee: International Business Machines Corp
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Filing: 1966-03-28
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Granted: 1969-05-06
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene T Kozol
- 👤 Joseph P Pawletko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:02
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/02; H04L13/04; H02; H02P; H02P8/00; H02P8/04; Y; Y10; Y10S; Y10S400/00; Y10S400/902
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |