US2964640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbidimeter
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1958-04-24
•
Granted: 1960-12-13
•
Expires: 1978-04-24
Abstract
No abstract record available.
Inventors
- 👤 Wippler Constant Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/85; G01N21/8507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1828894A
Cited
GB479662A
Cited
FR966498A
Cited
US2562181A
Cited
US2580500A
Cited
US2673297A
Cited
US2892378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |