US3740320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for measuring the amount of gas absorbed or released by a substance
Assignee: Individual
•
Filing: 1971-01-25
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Granted: 1973-06-19
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Expires: 1991-01-25
Abstract
Abstract THIS INVENTION RELATES TO AN APPARATUS AND METHOD FOR MEASURNG THE AMOUNT OF GAS ABSORBED ORRELEASED BY A SUBSTANCE AND IN PARTICULAR FOR MEASURNG THE BIOLOGICAL ACTIVITY OF BACTERIAL CULTURES, THE APPARATUS AND METHOD ARE USEFUL, FOR INSTANCE, IN WATER POLLUTION CNTROL IN STUDIES TO DETERMINE THE STRENGTH OF WASTE WATER.
Inventors
- 👤 R Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/18; G01N33/1806; G01N7/00; G01N7/02; Y; Y10; Y10S; Y10S435/00; Y10S435/807
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |