Patent US2954173A successfully refreshed from Google Patents.
US2954173A
Expired / Lapsed
US
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Process for cleaning and pulping waste
Assignee: Individual
•
Filing: 1958-12-11
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Granted: 1960-09-27
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Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 Archibald B Dunwody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:11
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/02; D21B1/026; B; B02; B02C; B02C13/00; B02C13/14; B02C13/18; B02C13/26; B02C13/282; B02C13/284
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |