US2531793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygienic syringe
Assignee: Individual
•
Filing: 1948-04-15
•
Granted: 1950-11-28
•
Expires: 1968-04-15
Abstract
No abstract record available.
Inventors
- 👤 Sulek Steve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0279; A61M3/0283; A61M1/00; A61M1/71; A61M1/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US179950A
Cited
US321850A
Cited
US693358A
Cited
FR331872A
Cited
US1050803A
Cited
US2147652A
Cited
US2139653A
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 |