Patent DE135064C successfully refreshed from Google Patents.
US3472225A
Expired / Lapsed
US
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Fluid inverter
Assignee: Burton Medical Products Corp
•
Filing: 1966-05-31
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Granted: 1969-10-14
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Henry L Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0003; A61M16/0009; Y; Y10; Y10S; Y10S128/00; Y10S128/10; Y10T; Y10T137/00; Y10T137/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3034628A
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US3277914A
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US3311122A
Cited
US3373600A
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US3267949A
Cited
US3313313A
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US3368555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |