US2448741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscopic surgical instrument
Assignee: American Cystoscope Makers Inc
•
Filing: 1945-04-25
•
Granted: 1948-09-07
•
Expires: 1965-04-25
Abstract
No abstract record available.
Inventors
- 👤 William W Scott
- 👤 Lutz August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/149; A61B1/00; A61B1/06; A61B1/0661; A61B1/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090923A
Cited
US1679950A
Cited
US1798902A
Cited
US1908201A
Cited
US2031020A
Cited
US1971024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |