US2538662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expendable valve unit for surgical appliances
Assignee: Individual
•
Filing: 1950-01-24
•
Granted: 1951-01-16
•
Expires: 1970-01-24
Abstract
No abstract record available.
Inventors
- 👤 Charles C Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:14
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/24; A61M5/00; A61M5/14; A61M5/158; A61M2039/2473; A61M2039/2486; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789092A
Cited
US1094685A
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 |