US2813239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed single-phase motors
Assignee: Scania Verktyg AB
•
Filing: 1954-05-11
•
Granted: 1957-11-12
•
Expires: 1974-05-11
Abstract
No abstract record available.
Inventors
- 👤 Cour Iens Lassen La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:37
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04; H02K17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170618A
Cited
US1189296A
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US1867328A
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US1859368A
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US1912337A
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US1870272A
Cited
US2033525A
Cited
CH277790A
Cited
US2671879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |