Patent US768350A successfully refreshed from Google Patents.
US768350A
Expired / Lapsed
US
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Electromagnetic switch and signal.
Assignee: General Electric Co
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Filing: 1902-05-20
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Granted: 1904-08-23
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Expires: 1922-05-20
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Stewart Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:22
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; G01R19/155
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) | 1907-08-23 | 1908-02-22 | 1908-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-08-23 | 1912-02-22 | 1912-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-08-23 | 1916-02-22 | 1916-08-23 | $7700.00 | Window Closed / Lapsed |