US2730097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection mechanism
Assignee: Bayer Corp
•
Filing: 1951-06-19
•
Granted: 1956-01-10
•
Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Cutter Robert Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:45
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
IN AN APPARATUS OF THE CHARACTER DESCRIBED, A RUBBER STOPPER PIERCING ELEMENT CONSISTING OF A TUBLAR CONICAL SPIKE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ACETATE, CELLULOSE ACETATE BUTYRATE, A METHACRYLATE POLYMER, ETHYL CELLULOSE AND POLYSTYRENE CUT OFF AT ONE END ALONG A PLANE AT ABOUT 45* TO THE AXIS OF THE SPIKE TO PROVIDE A PIERCING END ON THE SPIKE, SAID SPIKE HAVING ITS PIERCING END SLOTTED FROM THE END THEREOF AXIALLY TO AN INTERMEDIATE POINT ALONG THE SPIKE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |