Patent US2046770A successfully refreshed from Google Patents.
US2046770A
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US
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Assignee: ROKO Corp
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Filing: 1933-01-31
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Granted: 1936-07-07
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Expires: 1953-01-31
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Coberly
- 👤 Edmond M Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:21
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/26; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/62; B01D29/66; B01D29/70; B01D29/72; B01D35/14; B01D35/153; B01D37/00
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) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |