Patent US2670447A successfully refreshed from Google Patents.
US2670447A
Expired / Lapsed
US
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Electric motor installation
Assignee: PRECISION PARTS CORP
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Filing: 1950-05-26
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Granted: 1954-02-23
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Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Paul V Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:44
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/20; H02K11/21; H02K11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US834899A
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US1012198A
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GB191319395A
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US1249526A
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US1424164A
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US1530724A
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US1843315A
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US1772778A
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US2176118A
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US2309583A
Cited
US2346778A
Cited
US2452807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |