US2933081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making heart condition surveys
Assignee: F R MACHINE WORKS Inc
•
Filing: 1955-05-04
•
Granted: 1960-04-19
•
Expires: 1975-05-04
Abstract
No abstract record available.
Inventors
- 👤 Charles A Passannante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/504; A61B5/00; A61B5/103; A61B5/11; A61B5/1102; A61B5/24; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/352; A61B5/70; A61B5/704
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |