US1628632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous self-cleaning mixer
Assignee: Gypsum Engineering & Manufacturing Co
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Filing: 1926-05-10
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Granted: 1927-05-10
•
Expires: 1946-05-10
Abstract
No abstract record available.
Inventors
- 👤 Payne Caleb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:16
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/1806; B28C5/1812; B01; B01F; B01F35/00; B01F35/10; B01F35/145
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) | 1930-05-09 | 1930-11-08 | 1931-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-09 | 1934-11-08 | 1935-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-09 | 1938-11-08 | 1939-05-10 | $7700.00 | Window Closed / Lapsed |