Patent US2439356A successfully refreshed from Google Patents.
US2439356A
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Control mechanism for related control of operated mechanisms
Assignee: ARENS CONTROLS Inc
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Filing: 1943-11-08
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Granted: 1948-04-06
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Expires: 1963-11-08
Abstract
No abstract record available.
Inventors
- 👤 Charles A Arens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
B; B64; B64C; B64C13/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006; Y10T74/20012; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20426; Y10T74/20438
Claims Analysis
Total Claims: 0
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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) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |