Patent US2527447A successfully refreshed from Google Patents.
US2527447A
Expired / Lapsed
US
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Liquid infusion device
Assignee: Westinghouse Electric Corp
•
Filing: 1947-09-26
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Granted: 1950-10-24
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Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Perl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:17
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US129882A
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US845968A
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US1158421A
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US1036767A
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US2192095A
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US2287582A
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US2268633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |