Patent US5623610A successfully refreshed from Google Patents.
Patent US3616795A successfully refreshed from Google Patents.
US3616795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure traction device
Assignee: Individual
•
Filing: 1969-04-21
•
Granted: 1971-11-02
•
Expires: 1989-04-21
Abstract
Abstract A FLUID PRESSURE DEVICE FOR APPLYING TRACTION TO ORTHOPEDIC PATIENTS UTILIZES HYDRAULIC CYLINDERS CONNECTED TOGETHER IN A CLOSED FLUID SYSTEM AND ACTUATED BY APPLYING TORQUE THROUGH A CALIBRATED COUNTERWEIGHT, RESULTING IN THE APPLICATION OF A CONSTANT REGULATED TENSION ON A PATIENT IN TRACTION.
Inventors
- 👤 Roy Y Powlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |