US3158171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distributor
Assignee: United States Stoneware Co
•
Filing: 1962-08-31
•
Granted: 1964-11-24
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 John S Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:10
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0278; B01D; B01D3/00; B01D3/008; Y; Y10; Y10S; Y10S261/00; Y10S261/44; Y10T; Y10T137/00; Y10T137/4673; Y10T137/479
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |