US3223609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygrometer
Assignee: Beckman Coulter Inc
•
Filing: 1961-10-30
•
Granted: 1965-12-14
•
Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Reeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
AN ELECTROLYTIC HYGROMETER CELL HAVING AT LEAST ONE ELECTRODE COMPOSED OF RHODIUM.
Claim 2
Dependent Claim
12 words
AN ELECTROLYTIC HYGROMETER CELL HAVING AT LEAST ONE ELECTRODE COMPOSED OF RHODIUM.
References Cited (Backward Citations)
US3021482A
Cited
US2719797A
Cited
US2863729A
Cited
GB759288A
Cited
US2830945A
Cited
US2934693A
Cited
US3023085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |