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US3512748A
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US
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Fluid-flow controller
Assignee: Delmed Inc
•
Filing: 1967-08-14
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Granted: 1970-05-19
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Expires: 1987-08-14
Abstract
No abstract record available.
Inventors
- 👤 Donald R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:16
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/28; A61M39/283; A61M39/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1905335A
Cited
US2600493A
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US2902248A
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US3010613A
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US3167299A
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US3174654A
Cited
US3113568A
Cited
US3273849A
Cited
US3171820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |