US3312518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binoculars having high and low magnification lens systems and coupled selective shutters
Assignee: Individual
•
Filing: 1963-09-06
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Granted: 1967-04-04
•
Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 David P Bushnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:08
CPC Classifications
G; G02; G02B; G02B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A BINOCULAR DEVICE COMPRISING A CASING, A FIRST VIEWING MEANS IN ONE SECTION OF SAID CASING HAVING A LENS SYSTEM PROVIDING LOW MAGNIFICATION AND WIDE-FIELD, A SECOND VIEWING MEANS IN ANOTHER SECTION OF SAID CASING HAVING A SECOND LENS SYSTEM PROVIDING HIGH MAGNIFICATION AND NARROW-FIELD, CONTROL MEANS TO SIMULTANEOUSLY OPEN ONE OF SAID VIEWING MEANS AND CLOSE THE OTHER OF SAID VIEWING MEANS, SAID CONTROL MEANS INCLUDING SHUTTERS FOR EACH OF SAID VIEWING MEANS, A RING ABOUT EACH OF SAID SHUTTERS, A PINION MEANS ON EACH OF SAID RINGS, RACK MEANS MATING WITH EACH OF SAID PINION MEANS TO EFFECT ROTATION OF EACH OF SAID RINGS UPON LINEAR MOVEMENT OF SAID RACK MEANS,
Claim 2
Dependent Claim
113 words
A BINOCULAR DEVICE COMPRISING A CASING, A FIRST VIEWING MEANS IN ONE SECTION OF SAID CASING HAVING A LENS SYSTEM PROVIDING LOW MAGNIFICATION AND WIDE-FIELD, A SECOND VIEWING MEANS IN ANOTHER SECTION OF SAID CASING HAVING A SECOND LENS SYSTEM PROVIDING HIGH MAGNIFICATION AND NARROW-FIELD, CONTROL MEANS TO SIMULTANEOUSLY OPEN ONE OF SAID VIEWING MEANS AND CLOSE THE OTHER OF SAID VIEWING MEANS, SAID CONTROL MEANS INCLUDING SHUTTERS FOR EACH OF SAID VIEWING MEANS, A RING ABOUT EACH OF SAID SHUTTERS, A PINION MEANS ON EACH OF SAID RINGS, RACK MEANS MATING WITH EACH OF SAID PINION MEANS TO EFFECT ROTATION OF EACH OF SAID RINGS UPON LINEAR MOVEMENT OF SAID RACK MEANS,
References Cited (Backward Citations)
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Cited
GB167443A
Cited
US1770351A
Cited
US2242666A
Cited
US2481082A
Cited
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Cited
US2848924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |