Patent US3224526A successfully refreshed from Google Patents.
US3224526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stethos cope
Assignee: —
•
Filing: —
•
Granted: 1965-12-21
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02; A61B7/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A STETHOSCOPE HEAD CONSTRUCTION COMPRISING, A BODY MEMBER FORMING DIAMETRICALLY OPPOSED DIAPHRAGM AND OPEN MICROPHONES, SAID BODY MEMBER HAVING A CYLINDRICAL RECESS SYMMETRICALLY INTERPOSED BETWEEN SAID MICROPHONES, MEANS FORMING ALIGNED OPENINGS FROM THE APEX OF EACH OF SAID MICROPHONES THROUGH SAID MEMBER, A TUBULAR SHAFT, MEANS ROTATABLY SECURING SAID SHAFT WITHIN SAID RECESS AGAINST AXIAL MOVEMENT, MEANS FORMING AN OPENING THROUGH THE WALL OF THE SHAFT ADAPTED ON ROTATION OF SAID SHAFT TO BE ALIGNED SE-
Claim 2
Dependent Claim
76 words
A STETHOSCOPE HEAD CONSTRUCTION COMPRISING, A BODY MEMBER FORMING DIAMETRICALLY OPPOSED DIAPHRAGM AND OPEN MICROPHONES, SAID BODY MEMBER HAVING A CYLINDRICAL RECESS SYMMETRICALLY INTERPOSED BETWEEN SAID MICROPHONES, MEANS FORMING ALIGNED OPENINGS FROM THE APEX OF EACH OF SAID MICROPHONES THROUGH SAID MEMBER, A TUBULAR SHAFT, MEANS ROTATABLY SECURING SAID SHAFT WITHIN SAID RECESS AGAINST AXIAL MOVEMENT, MEANS FORMING AN OPENING THROUGH THE WALL OF THE SHAFT ADAPTED ON ROTATION OF SAID SHAFT TO BE ALIGNED SE-
References Cited (Backward Citations)
US2614646A
Cited
US3035656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |