Patent US3308819A successfully refreshed from Google Patents.
US3308819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anesthetic device
Assignee: Iowa State University Research Foundation Inc
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Filing: 1963-12-09
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Granted: 1967-03-14
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Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Leon J Arp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN COMBINATION, A HYPODERMIC SYRINGE EQUIPPED WITH A POINTED CANNULA FOR THE DELIVERY OF ANESTHETIC, A UNITARY FLEXIBLE PLASTIC TUBE ENSLEEVED ABOUT SAID CANNULA, SAID TUBE HAVING INTEGRAL SPUR MEANS POSITIONED ADJACENT THE END OF SAID CANNULA EFFECTIVE TO ANCHOR SAID TUBE IN POSITION IN CERVICAL TISSUE WHEN THE CANNULA IS REMOVED FROM THE TUBE.
Claim 2
Dependent Claim
55 words
IN COMBINATION, A HYPODERMIC SYRINGE EQUIPPED WITH A POINTED CANNULA FOR THE DELIVERY OF ANESTHETIC, A UNITARY FLEXIBLE PLASTIC TUBE ENSLEEVED ABOUT SAID CANNULA, SAID TUBE HAVING INTEGRAL SPUR MEANS POSITIONED ADJACENT THE END OF SAID CANNULA EFFECTIVE TO ANCHOR SAID TUBE IN POSITION IN CERVICAL TISSUE WHEN THE CANNULA IS REMOVED FROM THE TUBE.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |