Patent US3150801A successfully refreshed from Google Patents.
US3150801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe
Assignee: Individual
•
Filing: 1960-09-06
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Granted: 1964-09-29
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Expires: 1980-09-06
Abstract
No abstract record available.
Inventors
- 👤 Clark H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31511; A61M5/31513; B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/24; G01N2001/247
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A PLUNGER FOR SYRINGES: A FLANGE SUPPORTING PART OF SUBSTANTIALLY SMALLER DIAMETER THAN THE DIAMETER OF THE BORE OF A SYRINGE IN WHICH THE PLUNGER IS TO BE USED; AND A RESILIENT SEALING FLANGE ON SAID PART, SAID FLANGE HAVING AN EXTERNAL PORTION NORMALLY CYLINDRICAL AND A WEB CONNECTING SAID PORTION TO THE SUPPORTING PART, SAID WEB BEING OF LESS THICKNESS THAN THE LENGTH OF THE CYLINDRICAL PART AND ADAPTED TO FLEX IN AN ANNULAR PIVOTAL AREA SUBSTANTIALLY CONCENTRIC WITH THE CYLINDRICAL PORTION.
References Cited (Backward Citations)
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US1715406A
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US1948982A
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Cited
US2902034A
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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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |