US2557375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning strainer for fluids
Assignee: Ingersoll Rand Co
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Filing: 1949-01-19
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Granted: 1951-06-19
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Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Dickenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:34
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/60; B01D29/606; B01D29/62; B01D29/66; B01D29/668; B01D29/88; B01D29/92; B01D2201/00; B01D2201/20; B01D2201/204; B01D2201/208
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) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |