US2164595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating electrodes
Assignee: Siemens and Halske AG
•
Filing: 1937-11-13
•
Granted: 1939-07-04
•
Expires: 1957-11-13
Abstract
No abstract record available.
Inventors
- 👤 Siebertz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:05
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/12; H01J2201/00; H01J2201/32; H01J2201/34
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) | 1942-07-03 | 1943-01-02 | 1943-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-03 | 1947-01-02 | 1947-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-03 | 1951-01-02 | 1951-07-04 | $7700.00 | Window Closed / Lapsed |