Patent US388074A successfully refreshed from Google Patents.
Patent US1293087A successfully refreshed from Google Patents.
US1293087A
Expired / Lapsed
US
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Mixing apparatus.
Assignee: PERKINS GLUE Co
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Filing: 1916-02-29
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Granted: 1919-02-04
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Expires: 1936-02-29
Abstract
No abstract record available.
Inventors
- 👤 William M Grosvenor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/81
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) | 1922-02-03 | 1922-08-05 | 1923-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-02-03 | 1926-08-05 | 1927-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-02-03 | 1930-08-05 | 1931-02-04 | $7700.00 | Window Closed / Lapsed |