Patent US2724074A successfully refreshed from Google Patents.
US2724074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio remote control system
Assignee: Schneider Electric Buildings Americas Inc
•
Filing: 1950-04-07
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Granted: 1955-11-15
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Expires: 1970-04-07
Abstract
No abstract record available.
Inventors
- 👤 Oscar L Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555893A
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US1635779A
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US2069860A
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US2287926A
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US2361585A
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US2524782A
Cited
US2527561A
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US2547024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |