US2668730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control apparatus for door control mechanisms
Assignee: RUDOLPH I SCHONITZER
•
Filing: 1947-10-10
•
Granted: 1954-02-09
•
Expires: 1967-10-10
Abstract
No abstract record available.
Inventors
- 👤 Vito Angelo R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; E05B85/243; Y; Y10; Y10T; Y10T292/00; Y10T292/57
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2045320A
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US1955434A
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US1928729A
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US2094412A
Cited
US2140842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |