Patent US3256875A successfully refreshed from Google Patents.
US3256875A
Expired / Lapsed
US
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Flexible gastroscope
Assignee: Individual
•
Filing: 1963-05-17
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Granted: 1966-06-21
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Expires: 1983-05-17
Abstract
No abstract record available.
Inventors
- 👤 Tsepelev Juri Alexeevich
- 👤 Viliam-Vilmont Mari Nikolaevna
- 👤 Slavin Igor Arkadievich
- 👤 Rosenfeld Eliasar Borisovich
- 👤 Ushakov Boris Ivanovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:34
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/273; A61B1/2736; A61B1/00163; A61B1/005; A61B1/0051; A61B1/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A FLEXIBLE GASTROSCOPE COMPRISING AN ELONGATED FLEXIBLE TUBE, AN EYEPIECE ATTACHED TO THE INNER END OF SAID TUBE AND AN OBSERVATION HEAD ATTACHED TO THE OUTER END OF SAID TUBE, SAID OBSERVATION HEAD INCLUDING A CYLINDRICAL TRANSPARENT TUBULAR CASING PROVIDING A VIEWING WINDOW PERMITTING OBSERVATION THROUGH 360*, AN ELECTRIC LAMP TO ILLUMINATE THE FIELD OF OBSERVATION DISPOSED IN SAID CASING, A SLEEVE ROTATABLY MOUNTED IN SIAD HEAD WITHIN SAID CASING, AN OBJECTIVE LENS MOUNTED IN SAID SLEEVE, A PRISM MOUNTED IN SAID SLEEVE FOR REFLECTING LIGHT RAYS ENTERING THROUGH SAID CASING AT RIGHT ANGLES TO THE AXIS OF SAID SLEEVE THROUGH SAID OBJECTIVE LENS, A GEAR ON SAID SLEEVE AND A PINION ROTATABLY MOUNTED IN SAID HEAD AND MESHING WITH SAID GEAR, A FLEXIBLE SHAFT FIXED AT THE OUTER END TO SAID PINION AND EXTENDING THROUGH SAID TUBE TO A POINT ADJACENT SAID EYEPIECE, A SECOND PINION FIXED TO SAID SHAFT, A RING ROTATABLY MOUNTED ON SAID TUBE ADJACENT SAID EYEPIECE AND A GEAR ON SAID
Claim 2
Dependent Claim
166 words
A FLEXIBLE GASTROSCOPE COMPRISING AN ELONGATED FLEXIBLE TUBE, AN EYEPIECE ATTACHED TO THE INNER END OF SAID TUBE AND AN OBSERVATION HEAD ATTACHED TO THE OUTER END OF SAID TUBE, SAID OBSERVATION HEAD INCLUDING A CYLINDRICAL TRANSPARENT TUBULAR CASING PROVIDING A VIEWING WINDOW PERMITTING OBSERVATION THROUGH 360*, AN ELECTRIC LAMP TO ILLUMINATE THE FIELD OF OBSERVATION DISPOSED IN SAID CASING, A SLEEVE ROTATABLY MOUNTED IN SIAD HEAD WITHIN SAID CASING, AN OBJECTIVE LENS MOUNTED IN SAID SLEEVE, A PRISM MOUNTED IN SAID SLEEVE FOR REFLECTING LIGHT RAYS ENTERING THROUGH SAID CASING AT RIGHT ANGLES TO THE AXIS OF SAID SLEEVE THROUGH SAID OBJECTIVE LENS, A GEAR ON SAID SLEEVE AND A PINION ROTATABLY MOUNTED IN SAID HEAD AND MESHING WITH SAID GEAR, A FLEXIBLE SHAFT FIXED AT THE OUTER END TO SAID PINION AND EXTENDING THROUGH SAID TUBE TO A POINT ADJACENT SAID EYEPIECE, A SECOND PINION FIXED TO SAID SHAFT, A RING ROTATABLY MOUNTED ON SAID TUBE ADJACENT SAID EYEPIECE AND A GEAR ON SAID
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |