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Patent US2590180A successfully refreshed from Google Patents.
US2590180A
Expired / Lapsed
US
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Voltage regulation system
Assignee: United Shoe Machinery Corp
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Filing: 1947-01-10
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Granted: 1952-03-25
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Expires: 1967-01-10
Abstract
No abstract record available.
Inventors
- 👤 Juhola Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:18
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2019328A
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US1995404A
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US2084900A
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US2083382A
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US2259119A
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US2195121A
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US2196680A
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US2315619A
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US2325092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |