US2459374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core clamping means
Assignee: Kirkhof Manufacturing Corp
•
Filing: 1946-12-23
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Granted: 1949-01-18
•
Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Earl F Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:35
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/26; H01F27/263; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1441; Y10T24/1443; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US429583A
Cited
US2064011A
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US2236316A
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US2408211A
Cited
US2370045A
Cited
US2411104A
Cited
US2400994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |