Patent US3186300A successfully refreshed from Google Patents.
US3186300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double stereo-microscope and illuminator for surgical operations
Assignee: Carl Zeiss AG
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Filing: 1961-07-13
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Granted: 1965-06-01
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Littmann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN AN OPTICAL INSTRUMENT FOR SURGICAL USE ADAPTED TO BE POSITIONED ABOVE A SURGICAL TABLE TO VIEW AND MAGNIFY A PATIENT''S OPERATION FROM BOTH SIDES OF SAID TABLE, SUPPORT MEANS, A SUPPORTING HOUSING CARRIED BY SAID SUPPORT MEANS OF A WIDTH AND LENGTH TO EXTEND LATERALLY OF SAID TABLE, SAID HOUSING BEING PROVIDED WITH A CENTRAL OPENING, A PAIR OF STEREO MAGNIFICATION TUBES SLIDABLY AND ADJUSTABLY MOUNTED ON EACH END OF SAID SUPPORTING HOUSING, SAID TUBES EACH BEING PROVIDED AT THEIR UPPER ENDS WITH AN OCULAR AND BEING ARRANGED AT AN OBTUSE ANGLE WITH RESPECT TO THE ENDS OF SAID SUPPORTING HOUSING, AN OBJECTIVE IN EACH OF SAID ENDS OF THE SUPPORTING HOUSING AND MOVABLE WITH THE MAGNIFICATION TUBES, PRISM MEANS MOUNTED IN SAID SUPPORTING HOUSING ABOVE SAID OPENING AND HAVING OPPOSITELY ARRANGED UPWARDLY DIVERGENT REFLECTING SURFACES FOR DIRECTION IMAGE RAYS IN BOTH DIRECTIONS TOWARD SAID STEREO TUBES, A PAIR OF LIGHT SOURCE
Claim 2
Dependent Claim
153 words
IN AN OPTICAL INSTRUMENT FOR SURGICAL USE ADAPTED TO BE POSITIONED ABOVE A SURGICAL TABLE TO VIEW AND MAGNIFY A PATIENT''S OPERATION FROM BOTH SIDES OF SAID TABLE, SUPPORT MEANS, A SUPPORTING HOUSING CARRIED BY SAID SUPPORT MEANS OF A WIDTH AND LENGTH TO EXTEND LATERALLY OF SAID TABLE, SAID HOUSING BEING PROVIDED WITH A CENTRAL OPENING, A PAIR OF STEREO MAGNIFICATION TUBES SLIDABLY AND ADJUSTABLY MOUNTED ON EACH END OF SAID SUPPORTING HOUSING, SAID TUBES EACH BEING PROVIDED AT THEIR UPPER ENDS WITH AN OCULAR AND BEING ARRANGED AT AN OBTUSE ANGLE WITH RESPECT TO THE ENDS OF SAID SUPPORTING HOUSING, AN OBJECTIVE IN EACH OF SAID ENDS OF THE SUPPORTING HOUSING AND MOVABLE WITH THE MAGNIFICATION TUBES, PRISM MEANS MOUNTED IN SAID SUPPORTING HOUSING ABOVE SAID OPENING AND HAVING OPPOSITELY ARRANGED UPWARDLY DIVERGENT REFLECTING SURFACES FOR DIRECTION IMAGE RAYS IN BOTH DIRECTIONS TOWARD SAID STEREO TUBES, A PAIR OF LIGHT SOURCE
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |