Patent US2897391A successfully refreshed from Google Patents.
US2897391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Studded electrode and method of manufacture
Assignee: Individual
•
Filing: 1957-04-02
•
Granted: 1959-07-28
•
Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 George B Erskine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:43
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1314816A
Cited
US2734118A
Cited
US2245624A
Cited
GB613145A
Cited
US2360279A
Cited
US2348216A
Cited
US2476060A
Cited
US2614548A
Cited
US2565533A
Cited
US2701320A
Cited
US2840739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |