Patent US2430422A successfully refreshed from Google Patents.
US2430422A
Expired / Lapsed
US
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Portable electric tool with twist lock handle
Assignee: Singer Co
•
Filing: 1944-10-25
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Granted: 1947-11-04
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Expires: 1964-10-25
Abstract
No abstract record available.
Inventors
- 👤 Happe Reynold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:01
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE287377C
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US1539069A
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US1539068A
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US1615726A
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US1726428A
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US2066770A
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GB524492A
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US2281739A
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US2396007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |