Patent US5331511A successfully refreshed from Google Patents.
US2850877A
Expired / Lapsed
US
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Filter for hydraulic system
Assignee: Goodman Manufacturing Co LP
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Filing: 1954-05-17
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Granted: 1958-09-09
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Slomer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:22
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/04; F15B21/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876465A
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US780709A
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US941870A
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US1214372A
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US1427241A
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US1644101A
Cited
US2643025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |