US2416949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell for ph measurements
Assignee: Leeds and Northrup Co
•
Filing: 1942-06-10
•
Granted: 1947-03-04
•
Expires: 1962-06-10
Abstract
No abstract record available.
Inventors
- 👤 George A Perley
- 👤 James B Godshalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:15
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166; G01N27/4167
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2058761A
Cited
US1624845A
Cited
US1513558A
Cited
US1696873A
Cited
US1846354A
Cited
US1970950A
Cited
US2071697A
Cited
US2081926A
Cited
US2143723A
Cited
US2164755A
Cited
US2192123A
Cited
US2256771A
Cited
US2329896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |