Patent US2433256A successfully refreshed from Google Patents.
US2433256A
Expired / Lapsed
US
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Two-motion cam controlled automatic telephone switch
Assignee: Automatic Electric Laboratories Inc
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Filing: 1943-03-06
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Granted: 1947-12-23
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Expires: 1963-03-06
Abstract
No abstract record available.
Inventors
- 👤 Baker George Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
H; H01; H01H; H01H67/00; H01H67/02; H01H67/04; H01H67/12; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1587; Y10T74/1592; Y10T74/1594
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1725044A
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US1579026A
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US2228297A
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US2242340A
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US2218834A
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US2223848A
Cited
US2259103A
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GB545634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |