Patent US2538391A successfully refreshed from Google Patents.
US2538391A
Expired / Lapsed
US
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Syringe
Assignee: Individual
•
Filing: 1948-01-10
•
Granted: 1951-01-16
•
Expires: 1968-01-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:47
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/19; A61M5/28; A61M5/284; A61M5/20; A61M5/204; A61M5/285; A61M5/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1704924A
Cited
US1961490A
Cited
US2102704A
Cited
US2271720A
Cited
US2283234A
Cited
US2449968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |