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US3036711A
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Assignee: Purolator Products Inc
•
Filing: 1959-01-06
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Granted: 1962-05-29
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Expires: 1979-01-06
Abstract
No abstract record available.
Inventors
- 👤 John R Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/10; B01D27/103; B01D27/106; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1821082A
Cited
US2212647A
Cited
US2598322A
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US2731154A
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US2877902A
Cited
US2888141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |