US3513834A
Expired / Lapsed
US
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Anesthetic depth measuring system
Assignee: Hitachi Ltd
•
Filing: 1967-11-21
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Granted: 1970-05-26
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Expires: 1987-11-21
Abstract
No abstract record available.
Inventors
- 👤 Takaji Suzuki
- 👤 Zenmon Abe
- 👤 Sadao Horiguchi
- 👤 Kazuhiko Amano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/48; A61B5/4821; A61B5/103; A61B5/11; A61B5/1104; A61B5/1106; A61B5/24; A61B5/316; A61B5/369; A61B5/377; A61B5/383; A61B5/68; A61B5/6801; A61B5/6813; A61B5/6814
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |