US2471075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric remote selective control system
Assignee: Pollopas Patents Ltd
•
Filing: 1948-02-25
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Granted: 1949-05-24
•
Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Montrose-Oster Louis Eu Widolt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:52
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G01; G01R; G01R27/00; G01R27/02; H; H02; H02P; H02P7/00
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) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |