US3522013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid treatment apparatus
Assignee: VULCAN LAB Inc
•
Filing: 1968-07-18
•
Granted: 1970-07-28
•
Expires: 1988-07-18
Abstract
No abstract record available.
Inventors
- 👤 Donald R Borgeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:02
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319; Y10T137/7358; Y10T137/7381; Y10T137/7384; Y10T137/7404; Y10T137/7423; Y10T137/7426
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3185302A
Cited
US785682A
Cited
US976870A
Cited
US1065899A
Cited
DE760965C
Cited
US2825908A
Cited
US2904062A
Cited
US3005206A
Cited
US3107156A
Cited
US3094134A
Cited
US3190726A
Cited
US3374891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |