Patent US1819481A successfully refreshed from Google Patents.
US1819481A
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Machine for cutting magnetic circuit lamine
Assignee: THORDARSON ELECTRIC MANUFACTURING Co
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Filing: 1928-07-12
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Granted: 1931-08-18
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Expires: 1948-07-12
Abstract
No abstract record available.
Inventors
- 👤 Oscar A Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:40
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/217; Y10T83/2172; Y10T83/546; Y10T83/748; Y10T83/7593; Y10T83/764; Y10T83/869; Y10T83/8727; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8834; Y10T83/929; Y10T83/9411; Y10T83/9418; Y10T83/942; Y10T83/9423; Y10T83/9425; Y10T83/9428; Y10T83/943
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |