Patent US2267219A successfully refreshed from Google Patents.
US2267219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrically treating metal
Assignee: HENRY A ROEMER
•
Filing: 1940-01-23
•
Granted: 1941-12-23
•
Expires: 1960-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert F Renkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:09
CPC Classifications
C; C25; C25F; C25F1/00; C25F1/02; C25F1/04; C25F1/06; C23; C23C; C23C2/00; C23C2/04; C23C2/10; Y; Y10; Y10S; Y10S403/00; Y10S403/02
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) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |