Patent US3716047A successfully refreshed from Google Patents.
US3716047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable light-conductive speculum
Assignee: Welch Allyn Inc
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Filing: 1970-12-21
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Granted: 1973-02-13
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Expires: 1990-12-21
Abstract
Abstract A THREE PIECE VAGINAL SPECULUM INCLUDING A FIXED BLADE WITH INTEGRAL DEPENDING HOLLOW HANDLE AND A FORKED SLIDE MEMBER CARRIED ON THE HANDLE. A PAWL INTEGRAL WITH THE SLIDE IS SELECTIVELY ENGAGEABLE WITH TEETH ON THE HANDLE. A MOVABLE BLADE IS PIVOTALLY CARRIED ON THE FORK ENDS OF THE SLIDE AND HAS AN INTEGRAL LEVER PROJECTING PROXIMALLY. AN INTEGRAL SLIDE TONGUE HAS TEETH SELECTIVELY ENGAGEABLE WITH AN ABUTMENT ON THE LEVER. THE THREE PARTS ARE MOLDED PLASTIC AND A PORTION OF THE FIXED BLADE IS ADAPTED TO CARRY LIGHT FROM A SOURCE IN THE HANDLE TOWARD THE BLADE ENDS. D R A W I N G
Inventors
- 👤 W Moore
- 👤 W Pilgrim
- 👤 M Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/32; A61B1/06; A61B1/07
Claims Analysis
Total Claims: 0
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |