Patent US2645550A successfully refreshed from Google Patents.
US2645550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-lead electrocardiograph recorder
Assignee: TECHNICON CARDIOGRAPH Corp
•
Filing: 1947-07-22
•
Granted: 1953-07-14
•
Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Gorham George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US518534A
Cited
US1647710A
Cited
US1816465A
Cited
US1181511A
Cited
US1181037A
Cited
US1406507A
Cited
US2044333A
Cited
US1901921A
Cited
US1872799A
Cited
US1871944A
Cited
US1924777A
Cited
US2061457A
Cited
US2276423A
Cited
US2412639A
Cited
US2530868A
Cited
US2454966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |