Patent US2665638A successfully refreshed from Google Patents.
US2665638A
Expired / Lapsed
US
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Gear pump
Assignee: Borg Warner Corp
•
Filing: 1949-10-21
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Granted: 1954-01-12
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Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 John A Lauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:46
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/28; F04C15/00; F04C15/0057; F04C15/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1218300A
Cited
US1607383A
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US1629121A
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US1665026A
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US2280392A
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US2361226A
Cited
US2356322A
Cited
GB579582A
Cited
US2487449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |