US2969066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for draining ventricular fluid in cases of hydrocephalus
Assignee: Holter Co
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Filing: 1956-10-02
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Granted: 1961-01-24
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Expires: 1976-10-02
Abstract
No abstract record available.
Inventors
- 👤 John W Holter
- 👤 Spitz Eugene Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:05
CPC Classifications
A; A61; A61M; A61M27/00; A61M27/002; A61M27/006; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7884; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |