US2546538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling and brightening metal
Assignee: Crown Cork and Seal Co Inc
•
Filing: 1945-10-30
•
Granted: 1951-03-27
•
Expires: 1965-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Erhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:41
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/40; C23C2/38
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |