Patent US3481325A successfully refreshed from Google Patents.
US3481325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gastroscope
Assignee: Individual
•
Filing: 1966-03-31
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Granted: 1969-12-02
•
Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jacob A Glassman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:35
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/273; A61B1/2736; A61B1/06; A61B1/0627; A61B1/313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE365049C
Cited
DE606742C
Cited
US2583937A
Cited
US1913780A
Cited
GB412656A
Cited
US2479237A
Cited
US3044461A
Cited
US3261349A
Cited
US3261350A
Cited
US3269387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |