US3333521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera viewfinder
Assignee: Individual
•
Filing: 1964-12-18
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Granted: 1967-08-01
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Jr James A Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:54
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A CAMERA CAPABLE OF ACCURATELY TAKING EXTREME CLOSE-UPS FREE OF PARALLAX OR WHILE BEING HAND HELD, COMPRISING A LINEARLY MOVABLE TAKING LENS; A SPORTS-FINDER VIEW FRAME MOUNTED FOR RELATIVE MOVEMENT WITH SAID TAKING LENS OVER A DISTANCE APPROXIMATELY AT LEAST TWICE AS GREAT AS THE DISTANCE OF MOVEMENT OF SAID TAKING LENS; SUPPORTING MEANS FOR MAINTAINING SAID LENS AND SAID VIEW FRAME IN SYNCHRONIZED POSITION ALONG ANY POINT OF LINEAR TRAVEL OF SAID TAKING LENS AND FOR MAINTAINING SAID TAKING LENS AND SAID VIEW FRAME BOTH OVER THE SAME FIELD OF VISION FREE OF PARALLAX AND THE SAME SIZE FIELD OF VISION REGARDLESS OF THE LINEAR POSITION OF SAID TAKING LENS, SAID SUPPORTING MEANS COMPRISING FRAMEWORK MEANS TO SUPPORT SAID TAKING LENS AND MEANS TO PROGRESSIVELY MOVE SAID VIEW FRAME IN A DOWNWARD ARC FROM A POSITION BEHIND THE PLANE OF SAID TAKING LENS AT INFINITY FOCUS TO A POSITION IN FRONT OF THE PLANE OF SAID TAKING LENS AT CLOSE-UP FOCUS; A PEEP-SIGHT FOR COOPERATION WITH SAID VIEW FRAME; AND MEANS TO MOVE SAID TAKING LENS LINEARLY WHILE SIMULTANEOUSLY CHANGING THE POSITION OF SAID SUPPORTING MEANS TO MAINTAIN SAID LENS AND VIEW FRAME IN PROPER RELATIVE POSITION.
Claim 2
Dependent Claim
198 words
A CAMERA CAPABLE OF ACCURATELY TAKING EXTREME CLOSE-UPS FREE OF PARALLAX OR WHILE BEING HAND HELD, COMPRISING A LINEARLY MOVABLE TAKING LENS; A SPORTS-FINDER VIEW FRAME MOUNTED FOR RELATIVE MOVEMENT WITH SAID TAKING LENS OVER A DISTANCE APPROXIMATELY AT LEAST TWICE AS GREAT AS THE DISTANCE OF MOVEMENT OF SAID TAKING LENS; SUPPORTING MEANS FOR MAINTAINING SAID LENS AND SAID VIEW FRAME IN SYNCHRONIZED POSITION ALONG ANY POINT OF LINEAR TRAVEL OF SAID TAKING LENS AND FOR MAINTAINING SAID TAKING LENS AND SAID VIEW FRAME BOTH OVER THE SAME FIELD OF VISION FREE OF PARALLAX AND THE SAME SIZE FIELD OF VISION REGARDLESS OF THE LINEAR POSITION OF SAID TAKING LENS, SAID SUPPORTING MEANS COMPRISING FRAMEWORK MEANS TO SUPPORT SAID TAKING LENS AND MEANS TO PROGRESSIVELY MOVE SAID VIEW FRAME IN A DOWNWARD ARC FROM A POSITION BEHIND THE PLANE OF SAID TAKING LENS AT INFINITY FOCUS TO A POSITION IN FRONT OF THE PLANE OF SAID TAKING LENS AT CLOSE-UP FOCUS; A PEEP-SIGHT FOR COOPERATION WITH SAID VIEW FRAME; AND MEANS TO MOVE SAID TAKING LENS LINEARLY WHILE SIMULTANEOUSLY CHANGING THE POSITION OF SAID SUPPORTING MEANS TO MAINTAIN SAID LENS AND VIEW FRAME IN PROPER RELATIVE POSITION.
References Cited (Backward Citations)
FR543554A
Cited
US1856432A
Cited
US2157547A
Cited
US2123494A
Cited
US2355136A
Cited
US2552244A
Cited
US2649038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |