US3486622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Parker Hannifin Corp
•
Filing: 1967-01-18
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Granted: 1969-12-30
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Expires: 1987-01-18
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
- 👤 Robert L Firth
- 👤 Carl A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:17
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/027; B01D35/06; B01D35/14; B01D35/143; B01D35/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US337486A
Cited
US1817329A
Cited
US2583522A
Cited
GB1003557A
Cited
US3288289A
Cited
US3288290A
Cited
US3326375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |