US2621657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocardiographic electrode
Assignee: Individual
•
Filing: 1950-09-19
•
Granted: 1952-12-16
•
Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Clifton B Leech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:52
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251; A61B5/279; A61B5/28; A61B5/316; A61B5/318; A61B5/321; A61B5/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1117207A
Cited
US1076210A
Cited
US1480353A
Cited
US1889271A
Cited
US2126070A
Cited
US2555037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |