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US3444448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple input,solid state,reversing,motor control with direction lock-out
Assignee: Acme Visible Records Inc
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Filing: 1966-11-21
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Granted: 1969-05-13
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Newell G Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:41
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955322A
Cited
US3087102A
Cited
US3183425A
Cited
US3252067A
Cited
US3268742A
Cited
US3309593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |