US2962121A
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Assignee: Dollinger Corp
•
Filing: 1958-03-26
•
Granted: 1960-11-29
•
Expires: 1978-03-26
Abstract
No abstract record available.
Inventors
- 👤 Paul F Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:18
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0004; B01D46/24; B01D46/2403; B01D46/2411; B01D46/52; B01D46/521; B01D2265/00; B01D2265/02; B01D2265/028; B01D2271/00; B01D2271/02; Y; Y10; Y10S; Y10S264/00; Y10S264/48
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |