Patent US3200727A successfully refreshed from Google Patents.
US3200727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera rangefinders
Assignee: National Research Development Corp UK
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Filing: 1960-09-12
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Granted: 1965-08-17
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Barton Norman Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:25
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A STEREOSCOPIC BINOCULAR RANGE FINDER COMPRISING A ROTARY PLATE BEARING AT LEAST ONE LIGHT TRANSMITTING INDICATOR MARK, MEANS FOR ROTATING SAID PLATE ACCORDING TO A LENS APERTURE ADJUSTMENT, A COLLIMATOR AND A SEMIREFLECTOR ON TO WHICH LIGHT PASSING THROUGH THE ROTARY PLATE AND THE COLLIMATOR IS DIRECTED, A SECOND SEMI-REFLECTOR LOCATED IN ONE LINE OF BINOCULAR VISION AND UPON WHICH IS DIRECTED LIGHT SEMI-REFLECTOR LOCATED IN THE SECOND REFLECTOR, AND A THIRD SEMI-REFLECTOR LOCATED IN THE SECOND LINE OF BINOCULAR VISION AND ON WHICH LIGHT REFLECTED BY THE FIRS SEMI-REFLECTOR IS DIRECTED AND MEANS FOR EFFECTING RELATIVE MOVEMENT OF THE ROTARY PLATE AND THE COLLIMATOR IN ACCORDANCE WITH MOVEMENT OF THE LENS FOCUSING ADJUSTMENT TO BRING THE IMAGES OF INDICATING MARKS IN THE BINOCULAR VISION INTO FUSION.
Claim 2
Dependent Claim
127 words
A STEREOSCOPIC BINOCULAR RANGE FINDER COMPRISING A ROTARY PLATE BEARING AT LEAST ONE LIGHT TRANSMITTING INDICATOR MARK, MEANS FOR ROTATING SAID PLATE ACCORDING TO A LENS APERTURE ADJUSTMENT, A COLLIMATOR AND A SEMIREFLECTOR ON TO WHICH LIGHT PASSING THROUGH THE ROTARY PLATE AND THE COLLIMATOR IS DIRECTED, A SECOND SEMI-REFLECTOR LOCATED IN ONE LINE OF BINOCULAR VISION AND UPON WHICH IS DIRECTED LIGHT SEMI-REFLECTOR LOCATED IN THE SECOND REFLECTOR, AND A THIRD SEMI-REFLECTOR LOCATED IN THE SECOND LINE OF BINOCULAR VISION AND ON WHICH LIGHT REFLECTED BY THE FIRS SEMI-REFLECTOR IS DIRECTED AND MEANS FOR EFFECTING RELATIVE MOVEMENT OF THE ROTARY PLATE AND THE COLLIMATOR IN ACCORDANCE WITH MOVEMENT OF THE LENS FOCUSING ADJUSTMENT TO BRING THE IMAGES OF INDICATING MARKS IN THE BINOCULAR VISION INTO FUSION.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |