Patent US1257178A successfully refreshed from Google Patents.
US1257178A
Expired / Lapsed
US
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Dynamo-electric machine.
Assignee: General Electric Co
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Filing: 1915-10-18
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Granted: 1918-02-19
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Expires: 1935-10-18
Abstract
No abstract record available.
Inventors
- 👤 Sven R Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:06
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/10; H02K19/103
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) | 1921-02-18 | 1921-08-20 | 1922-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-02-18 | 1925-08-20 | 1926-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-02-18 | 1929-08-20 | 1930-02-19 | $7700.00 | Window Closed / Lapsed |