Patent US1833465A successfully refreshed from Google Patents.
US1833465A
Expired / Lapsed
US
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Means for forming clay products having spiral centers
Assignee: Individual
•
Filing: 1929-01-07
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Granted: 1931-11-24
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Expires: 1949-01-07
Abstract
No abstract record available.
Inventors
- 👤 Maurice A Knight
- 👤 Baird Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/20; B28B3/26; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/12; B29C48/131; B29C48/25; B29C48/30; B29C48/32; B29C48/33
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) | 1934-11-23 | 1935-05-25 | 1935-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-23 | 1939-05-25 | 1939-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-23 | 1943-05-25 | 1943-11-24 | $7700.00 | Window Closed / Lapsed |