US2426958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode holder for use in electroencephalography
Assignee: Individual
•
Filing: 1944-12-27
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Granted: 1947-09-02
•
Expires: 1964-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jr George A Ulett
- 👤 Fred B Claussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:05
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/6802; A61B5/6803; A61B5/24; A61B5/25; A61B5/279; A61B5/291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |