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Patent US1709676A successfully refreshed from Google Patents.
US1709676A
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US
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Apparatus for separating the constituents of pulp
Assignee: GERTRUDE ELLEN MARTYN
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Filing: 1926-12-24
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Granted: 1929-04-16
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Expires: 1946-12-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:04
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D21/00; B01D21/0012; B01D21/0039; B01D21/0045; B01D21/0069; B01D21/0075; B01D21/24; B01D21/2427; B01D2221/00; B01D2221/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-04-15 | 1932-10-15 | 1933-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-04-15 | 1936-10-15 | 1937-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-04-15 | 1940-10-15 | 1941-04-16 | $7700.00 | Window Closed / Lapsed |