Patent US3074408A successfully refreshed from Google Patents.
US3074408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ureteral stone extractor and dilator
Assignee: Individual
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Filing: 1961-05-22
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Granted: 1963-01-22
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Martin H Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22031
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
IN COMBINATION, A FORCEPS COMPRISING A PLURALITY OF FLEXIBLE JAWS, SPRING MEANS ATTACHED TO SAID JAWS FOR URGING SAID JAWS TO CLOSE; SOUND TRANSDUCER MEANS POSITIONED CONCENTRIC WITH SAID FORCEPS FOR PRODUCING SOUND VIBRATIONS IN ACCORDANCE WITH THE HARDNESS OF OBJECTS CONTACTED THEREBY, SAID SOUND TRANSDUCER MEANS BEING SLIDABLY MOUNTED RELATIVE TO SAID FORCEPS; MEANS FOR OPENING SAID JAWS; MEANS FOR SLIDABLY POSITIONING SAID TRANSDUCER RELATIVE TO SAID FORCEPS; AND MEANS CONNECTED TO RECEIVE
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |