Patent US3392966A successfully refreshed from Google Patents.
US3392966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating tower inductor
Assignee: US STONEWARE Inc
•
Filing: 1966-07-28
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Granted: 1968-07-16
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Expires: 1986-07-28
Abstract
No abstract record available.
Inventors
- 👤 John S Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:04
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/008; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7182; B01J; B01J8/00; B01J8/02; B01J8/0278; B01F25/00; B01F25/40; B01F25/41
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |