Patent US3457501A successfully refreshed from Google Patents.
US3457501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Probe for measuring conductivity of an electrolyte solution
Assignee: Individual
•
Filing: 1966-08-18
•
Granted: 1969-07-22
•
Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Maxwell Ingram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1670640A
Cited
US2470153A
Cited
US2533462A
Cited
US2611007A
Cited
US2769140A
Cited
US2780773A
Cited
US2810879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |