Patent US2552028A successfully refreshed from Google Patents.
US2552028A
Expired / Lapsed
US
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Electric motor terminal block
Assignee: Individual
•
Filing: 1948-09-09
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Granted: 1951-05-08
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Expires: 1968-09-09
Abstract
No abstract record available.
Inventors
- 👤 Blair Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/22; H02K5/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US263554A
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US1123321A
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US1393822A
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US1608613A
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US1502909A
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FR568582A
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US1701382A
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GB373153A
Cited
US2057525A
Cited
US2319490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |