US3468796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical feed methods and apparatus
Assignee: Veolia WTS USA Inc
•
Filing: 1967-10-13
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Granted: 1969-09-23
•
Expires: 1987-10-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Noll
- 👤 Luciano J La Salvia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:51
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; C05; C05C; C05C1/00; C02F2103/00; C02F2103/02; C02F2103/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2843138A
Cited
US3223620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |