US3432418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarographic analyzer
Assignee: Phillips Petroleum Co
•
Filing: 1965-07-19
•
Granted: 1969-03-11
•
Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Louis D Kleiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:38
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3098813A
Cited
US3239444A
Cited
US3322662A
Cited
US3297943A
Cited
US3235477A
Cited
US3334623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |