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US2478690A
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Assignee: Siemens Energy and Automation Inc
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Filing: 1946-12-09
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Granted: 1949-08-09
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Expires: 1966-12-09
Abstract
No abstract record available.
Inventors
- 👤 William C Furnas
- 👤 Edward L Rucks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:19
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919949A
Cited
US2015874A
Cited
GB486516A
Cited
US2163919A
Cited
US2201881A
Cited
US2210842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |