US961549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode.
Assignee: Occidental Chemical Corp
•
Filing: 1909-01-26
•
Granted: 1910-06-14
•
Expires: 1929-01-26
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:58
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/03
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) | 1913-06-13 | 1913-12-13 | 1914-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-06-13 | 1917-12-13 | 1918-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-06-13 | 1921-12-13 | 1922-06-14 | $7700.00 | Window Closed / Lapsed |