US3440802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reservoir filter and indicator
Assignee: Parker Hannifin Corp
•
Filing: 1966-08-01
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Granted: 1969-04-29
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Nils O Rosaen
- 👤 Borje O Rosaen
- 👤 Oscar E Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:14
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/001; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D35/00; B01D35/02; B01D35/027; B01D35/0276; B01D35/06; B01D35/14; B01D35/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |