Patent US3018968A successfully refreshed from Google Patents.
US3018968A
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US
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Closed system recirculating assembly
Assignee: Spee Flo Manufacturing Corp
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Filing: 1959-11-17
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Granted: 1962-01-30
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Expires: 1979-11-17
Abstract
No abstract record available.
Inventors
- 👤 Gustave S Levey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:57
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/002; B05B15/00; B05B15/50; B05B15/58; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US627877A
Cited
US2348190A
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US2378184A
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US2605137A
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US2779627A
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US2754228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |