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Patent US2642558A successfully refreshed from Google Patents.
US2642558A
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US
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Electric power supply equipment
Assignee: International Standard Electric Corp
•
Filing: 1949-05-26
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Granted: 1953-06-16
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Terry Victor John
- 👤 Kelly Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:53
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1654937A
Cited
US1654979A
Cited
US1915074A
Cited
US2299942A
Cited
US2334528A
Cited
US2547162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |