US2556242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic equalizer
Assignee: International Standard Electric Corp
•
Filing: 1947-03-08
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Granted: 1951-06-12
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Expires: 1967-03-08
Abstract
No abstract record available.
Inventors
- 👤 Stanislas A Van Mierlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:32
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/208; H; H01; H01F; H01F19/00; H01F19/04; H02; H02P; H02P1/00; H02P1/16; H02P1/26; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/46; H04J; H04J3/00; H04J3/02; H04J3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |