US2747035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex switch actuator
Assignee: Siemens Energy and Automation Inc
•
Filing: 1953-03-09
•
Granted: 1956-05-22
•
Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 Gilbert H Hansen
- 👤 Nobel H Koertge
- 👤 Paul F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:30
CPC Classifications
G; G05; G05G; G05G9/00; G05G9/02; G05G9/04; G05G9/047; G05G9/04785; G05G2009/04703; G05G2009/04714; G05G2009/04718; G05G2009/0474; G05G2009/04744; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1557214A
Cited
DE728614C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |