US2657808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water separator
Assignee: Bowser Inc
•
Filing: 1950-10-12
•
Granted: 1953-11-03
•
Expires: 1970-10-12
Abstract
No abstract record available.
Inventors
- 👤 Paul A Mankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:17
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/08; B01D17/10; Y; Y10; Y10S; Y10S210/00; Y10S210/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1179157A
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US1218738A
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US1642864A
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US1710758A
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US1823171A
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US1787577A
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US1947709A
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US2103572A
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GB492956A
Cited
US2196821A
Cited
US2422647A
Cited
US2584387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |