Patent US2531893A successfully refreshed from Google Patents.
US2531893A
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US
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Hypodermic syringe
Assignee: Mizzy Inc
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Filing: 1947-10-25
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Granted: 1950-11-28
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Expires: 1967-10-25
Abstract
No abstract record available.
Inventors
- 👤 Zbislaw M Roehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:53
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/24; A61M2005/2403; A61M2005/2411; A61M2005/2433; A61M2005/2437; A61M2207/00; A61M5/31; A61M5/3129; A61M5/32; A61M5/34; A61M5/347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848711A
Cited
USRE16836E
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US1604224A
Cited
US1734356A
Cited
US1752384A
Cited
US2100456A
Cited
US2446692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |