US2668221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Domestic appliance
Assignee: Motors Liquidation Co
•
Filing: 1949-07-16
•
Granted: 1954-02-02
•
Expires: 1969-07-16
Abstract
No abstract record available.
Inventors
- 👤 Francis H Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:48
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/06; F24C7/08; F24C7/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1118454A
Cited
GB117996A
Cited
US1375801A
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CH93215A
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US1530007A
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US1580288A
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US1637435A
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US2146427A
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US2196035A
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US2237808A
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US2442900A
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US2434467A
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US2276930A
Cited
US2408295A
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US2415768A
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US2388839A
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GB600388A
Cited
US2446063A
Cited
US2536613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |