US2642999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic holding device
Assignee: Individual
•
Filing: 1949-02-17
•
Granted: 1953-06-23
•
Expires: 1969-02-17
Abstract
No abstract record available.
Inventors
- 👤 John C Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:08
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; Y; Y10; Y10S; Y10S211/00; Y10S211/01; Y10S428/00; Y10S428/90; Y10T; Y10T24/00; Y10T24/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1558977A
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US1947825A
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US2192569A
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US2217514A
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US2179012A
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DE700570C
Cited
US2248916A
Cited
US2270331A
Cited
US2297806A
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US2385859A
Cited
US2414653A
Cited
US2457032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |