Patent US2492238A successfully refreshed from Google Patents.
US2492238A
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US
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Magnetic stand with adjustable shunt
Assignee: Individual
•
Filing: 1947-11-21
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Granted: 1949-12-27
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Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Roof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0205; H01F7/0226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778481A
Cited
GB444786A
Cited
US2179305A
Cited
US2269149A
Cited
US2275839A
Cited
US2268011A
Cited
US2333230A
Cited
US2347023A
Cited
US2442016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |