US2436394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic detector
Assignee: Individual
•
Filing: 1941-06-06
•
Granted: 1948-02-24
•
Expires: 1961-06-06
Abstract
No abstract record available.
Inventors
- 👤 Wilson R Maltby
- 👤 Robert H Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/042; F; F42; F42B; F42B22/00; F42B22/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US571739A
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DE348257C
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US840018A
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US1382374A
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US1798256A
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US2161635A
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US2016977A
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FR803907A
Cited
US2252059A
Cited
US2317718A
Cited
US2228623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |