US2942168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic shunting switch for an inductance-type starting current limiting device for alternating current motors
Assignee: Individual
•
Filing: 1958-02-21
•
Granted: 1960-06-21
•
Expires: 1978-02-21
Abstract
No abstract record available.
Inventors
- 👤 Schrack Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:39
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/24
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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |