Patent US3213870A successfully refreshed from Google Patents.
US3213870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crutches
Assignee: Kiehn Products Co
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Filing: 1963-02-21
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Granted: 1965-10-26
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Expires: 1983-02-21
Abstract
No abstract record available.
Inventors
- 👤 Mogens H Kiehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
AN IMPROVED CRUTCH CONSTRUCTION COMPRISING; ELONGATED LEG MEANS, MEANS ON THE LOWER END OF SAID LEG MEANS FOR ENGAGING A SUPPORTING SURFACE, BODY SUPPORT MEANS ADJACENT THE UPPER END OF SAID LEG MEANS, AND HAND GRIP MEANS BETWEEN SAID BODY SUPPORT MEANS AND SAID SURFACE ENGAGING MEANS, SAID BODY SUPPORT MEANS INCLUDING ARMPIT SUPPORT MEANS FOR SEATING IN THE ARMPIT OF A USER, AND TORSO SUPPORT MEANS DISPOSED BETWEEN SAID ARMPIT SUPPORT MEANS AND SAID HAND GRIP MEANS FOR ENGAGING THE SIDE OF AND SUPPORTING THE TORSO OF THE USER,
Claim 2
Dependent Claim
90 words
AN IMPROVED CRUTCH CONSTRUCTION COMPRISING; ELONGATED LEG MEANS, MEANS ON THE LOWER END OF SAID LEG MEANS FOR ENGAGING A SUPPORTING SURFACE, BODY SUPPORT MEANS ADJACENT THE UPPER END OF SAID LEG MEANS, AND HAND GRIP MEANS BETWEEN SAID BODY SUPPORT MEANS AND SAID SURFACE ENGAGING MEANS, SAID BODY SUPPORT MEANS INCLUDING ARMPIT SUPPORT MEANS FOR SEATING IN THE ARMPIT OF A USER, AND TORSO SUPPORT MEANS DISPOSED BETWEEN SAID ARMPIT SUPPORT MEANS AND SAID HAND GRIP MEANS FOR ENGAGING THE SIDE OF AND SUPPORTING THE TORSO OF THE USER,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |