US2919030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter-dehydrator
Assignee: Bowser Inc
•
Filing: 1956-01-20
•
Granted: 1959-12-29
•
Expires: 1976-01-20
Abstract
No abstract record available.
Inventors
- 👤 Michael G Grant
- 👤 George J Topol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:55
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/08; B01D17/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559439A
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US125786A
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GB259751A
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DE587615C
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US2064097A
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FR835858A
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US2408130A
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US2392901A
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US2471069A
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US2651417A
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US2446979A
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US2550853A
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US2554748A
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US2539768A
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US2670851A
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US2657808A
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US2654483A
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US2692696A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |