Patent US3494354A successfully refreshed from Google Patents.
US3494354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible endoscope for use in cancer diagnosis
Assignee: Toshiba Corp
•
Filing: 1965-09-30
•
Granted: 1970-02-10
•
Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Ryosuke Yokota
- 👤 Shigehiko Fuwa
- 👤 Shinichi Kawashima
- 👤 Yutaka Masuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3357433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |