Patent US2491798A successfully refreshed from Google Patents.
US2491798A
Expired / Lapsed
US
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Protected electrical apparatus
Assignee: General Electric Co
•
Filing: 1944-01-05
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Granted: 1949-12-20
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Expires: 1964-01-05
Abstract
No abstract record available.
Inventors
- 👤 Camilli Guglielmo
- 👤 Vincent M Montsinger
- 👤 John J Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:28
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/04; H02H5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1699752A
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US1917087A
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US1717216A
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US1934958A
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US2046578A
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US2053944A
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US2155371A
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US2196442A
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US2320929A
Cited
US2354529A
Cited
US2329614A
Cited
US2403372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |