Patent US3181535A successfully refreshed from Google Patents.
US1573673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying finely-divided materials
Assignee: Trojan Powder Co
•
Filing: 1919-10-23
•
Granted: 1926-02-16
•
Expires: 1939-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jesse B Bronstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/06; F26B25/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1929-02-15 | 1929-08-17 | 1930-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-02-15 | 1933-08-17 | 1934-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-02-15 | 1937-08-17 | 1938-02-16 | $7700.00 | Window Closed / Lapsed |