US2441632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible motor control system
Assignee: Pitometer Log Corp
•
Filing: 1943-07-26
•
Granted: 1948-05-18
•
Expires: 1963-07-26
Abstract
No abstract record available.
Inventors
- 👤 Holst Knute Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2077086A
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US1164032A
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US1553407A
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US1605038A
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US1793586A
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US2339743A
Cited
US2246516A
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US2331934A
Cited
US2325401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |