US2475321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded core
Assignee: HENRY L CROWLEY
•
Filing: 1943-06-22
•
Granted: 1949-07-05
•
Expires: 1963-06-22
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:05
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49076; Y10T403/00; Y10T403/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US729716A
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US1989186A
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GB436428A
Cited
US2199620A
Cited
US2253003A
Cited
US2216878A
Cited
US2277673A
Cited
US2177191A
Cited
US2330590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |