Patent US1342884A successfully refreshed from Google Patents.
US2425320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning and pickling of metals
Assignee: Beazer East Inc
•
Filing: 1942-10-23
•
Granted: 1947-08-12
•
Expires: 1962-10-23
Abstract
No abstract record available.
Inventors
- 👤 William H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:11
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1780636A
Cited
GB347228A
Cited
US2072003A
Cited
US2050204A
Cited
US2203649A
Cited
US2335452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |