US3468424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Straight-line filter with water box
Assignee: Ametek Inc
•
Filing: 1968-03-07
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Granted: 1969-09-23
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Expires: 1988-03-07
Abstract
No abstract record available.
Inventors
- 👤 Roland L Laugel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:11
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/056; B01D33/70; B01D33/74; B01D33/745
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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |