Patent US2764359A successfully refreshed from Google Patents.
US2764359A
Expired / Lapsed
US
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Treatment of liquid systems and apparatus therefor
Assignee: Individual
•
Filing: 1950-05-24
•
Granted: 1956-09-25
•
Expires: 1970-05-24
Abstract
No abstract record available.
Inventors
- 👤 Szegvari Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:45
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; Y; Y10; Y10S; Y10S241/00; Y10S241/604
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |