US3379312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid strainers
Assignee: Air Maze Corp
•
Filing: 1965-03-16
•
Granted: 1968-04-23
•
Expires: 1985-03-16
Abstract
No abstract record available.
Inventors
- 👤 Richard E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:26
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/25; B01D29/60; B01D29/606; B01D29/62; B01D29/64; B01D29/6407; B01D29/6415; B01D35/00; B01D35/14; B01D35/143; B01D35/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE12715C
Cited
US521591A
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US536536A
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AT19080B
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US781039A
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FR430290A
Cited
US1510863A
Cited
US1689277A
Cited
US1780774A
Cited
US2063742A
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US3168467A
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US3262568A
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |