US1260743A
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Transformer and method of making the same.
Assignee: DEUTSCHE-ELEKTRO-SPARLICHT-GESELLSCHAFT
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Filing: 1909-07-29
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Granted: 1918-03-26
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Expires: 1929-07-29
Abstract
No abstract record available.
Inventors
- 👤 Sulo Attila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:31
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49073; Y10T29/49075; Y10T29/49078; Y10T29/49826; Y10T29/49863; Y10T29/49865
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) | 1921-03-25 | 1921-09-24 | 1922-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-03-25 | 1925-09-24 | 1926-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-03-25 | 1929-09-24 | 1930-03-26 | $7700.00 | Window Closed / Lapsed |