US3512522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed chest cardiac massage apparatus
Assignee: Research Corp
•
Filing: 1968-03-01
•
Granted: 1970-05-19
•
Expires: 1988-03-01
Abstract
No abstract record available.
Inventors
- 👤 Malcolm B Greenlee
- 👤 Lawrence M Mastracci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:11
CPC Classifications
A; A61; A61H; A61H31/00; A61H31/004; A61H31/007; A61H31/006; A61H31/008; A61H2201/00; A61H2201/01; A61H2201/0173; A61H2201/12; A61H2201/1238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3254645A
Cited
US3307541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |