US2597379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable dual control device
Assignee: Individual
•
Filing: 1950-03-07
•
Granted: 1952-05-20
•
Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 William H Romel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:19
CPC Classifications
B; B60; B60K; B60K23/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213; Y10T74/2022; Y10T74/20576; Y10T74/20888; Y10T74/209; Y10T74/20906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US918680A
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US1275706A
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US1326377A
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US1420290A
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US1482973A
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US1585855A
Cited
US1801987A
Cited
FR718990A
Cited
US1906366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |