Patent US49894A successfully refreshed from Google Patents.
Patent US2460108A successfully refreshed from Google Patents.
Patent US2174348A successfully refreshed from Google Patents.
US2174348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the automatic unclogging of hoppers
Assignee: Individual
•
Filing: 1937-06-30
•
Granted: 1939-09-26
•
Expires: 1957-06-30
Abstract
No abstract record available.
Inventors
- 👤 Damond Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:19
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/64; B65D88/66
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) | 1942-09-25 | 1943-03-27 | 1943-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-25 | 1947-03-27 | 1947-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-25 | 1951-03-27 | 1951-09-26 | $7700.00 | Window Closed / Lapsed |