US2731592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrically controlled apparatus for producing alternating currents in synchronism with rotation of structure
Assignee: Carl Schenck AG
•
Filing: 1952-09-04
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Granted: 1956-01-17
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Expires: 1972-09-04
Abstract
No abstract record available.
Inventors
- 👤 Federn Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:35
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1450340A
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US1618757A
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US1856076A
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US1976355A
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US2213108A
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US2243379A
Cited
US2451863A
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US2523993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |