US2774057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic modulator
Assignee: Detroit Controls Corp
•
Filing: 1953-10-29
•
Granted: 1956-12-11
•
Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 William A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/204; G01D5/2046; G01L; G01L9/00; G01L9/0033; G01L9/0036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1615018A
Cited
US2185767A
Cited
US2080177A
Cited
CH239091A
Cited
US2493388A
Cited
FR1010170A
Cited
US2631272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |