Patent US3374065A successfully refreshed from Google Patents.
US3374065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biochemical oxygen demand continual detecting apparatus
Assignee: Toyo Giken Co Ltd
•
Filing: 1964-12-16
•
Granted: 1968-03-19
•
Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Suzuki Hideo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:29
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/16; G01N33/00; G01N33/18; G01N33/1806; Y; Y10; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |