US2932400A
Expired / Lapsed
US
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Assignee: Purolator Products Inc
•
Filing: 1957-04-01
•
Granted: 1960-04-12
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 William J Scavuzzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:11
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/001; B01D35/00; B01D35/14; B01D35/153; B01D35/30; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US922657A
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GB163252A
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US1849042A
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GB420326A
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US2108798A
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GB523919A
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US2431782A
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US2544244A
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GB707718A
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GB761611A
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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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |