US2446015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic concentration indicator
Assignee: CONTROL INSTR CO Inc
•
Filing: 1943-10-16
•
Granted: 1948-07-27
•
Expires: 1963-10-16
Abstract
No abstract record available.
Inventors
- 👤 Lehde Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US478098A
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GB190411509A
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GB191308602A
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US1399181A
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US1399200A
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US1684645A
Cited
GB333727A
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US2068499A
Cited
US2150015A
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US2306691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |