US2684069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision linear-fracture instrument for heart valve surgery
Assignee: Donaldson Co Inc
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Filing: 1952-07-05
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Granted: 1954-07-20
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Expires: 1972-07-05
Abstract
No abstract record available.
Inventors
- 👤 Donaldson John Shearman
- 👤 Henry B Larzelere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:37
CPC Classifications
A; A61; A61M; A61M29/00; A61B; A61B17/00; A61B17/22; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/22097
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |