US3406953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi-tube scrubber
Assignee: US STONEWARE Inc
•
Filing: 1966-07-11
•
Granted: 1968-10-22
•
Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Frank D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894696A
Cited
US2200891A
Cited
US2484277A
Cited
FR1062143A
Cited
US3177634A
Cited
US3186146A
Cited
US3210914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |