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US2453862A
Expired / Lapsed
US
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Gastroscope
Assignee: Individual
•
Filing: 1947-06-02
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Granted: 1948-11-16
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Salisbury Peter Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00174; A61B1/00177; A61B1/005; A61B1/0051; A61B1/0052; A61B1/273; A61B1/2736; Y; Y10; Y10S; Y10S385/00; Y10S385/902
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |