US2543014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric contact-controlling device
Assignee: International Standard Electric Corp
•
Filing: 1946-11-09
•
Granted: 1951-02-27
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Grace Bertram Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/30; H04M1/31; H01; H01H; H01H36/00; H01H36/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB545818A
Cited
US1839075A
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US1870032A
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GB124041A
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US1852232A
Cited
DE628014C
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US1874199A
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US1969926A
Cited
US2189597A
Cited
US2384948A
Cited
US2410746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |