US3094781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Course finder
Assignee: Individual
•
Filing: 1960-03-10
•
Granted: 1963-06-25
•
Expires: 1980-03-10
Abstract
No abstract record available.
Inventors
- 👤 Vangor William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:20
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A COURSE FINDER COMPRISING A FIRST TRANSPARENCY DISPLAYING GEOGRAPHICAL SUBJECT MATTER INCLUDING INDICIA DENOTING LOCATION POINTS AND COMPRISING A PHOTOGRAPHIC FILM SUPPORTED IN A FRAME; A SECOND TRANSPARENCY HAVING INDICIA CONSISTING OF A PLURALITY OF SPACED PARALLEL LINES; MEANS FOR HOLDING SAID TRANSPARENCIES IN SUPERPOSED POSITION FOR SIMULTANEOUS VIEWING BY LIGHT TRANSMITTED THROUGH THE TRANSPARENCIES, SAID MEANS PROVIDING FOR THE ROTATION OF ONE OF SAID TRANSPARENCIES THROUGH AN ARC OF AT LEAST 180* RELATIVE TO THE OTHER ABOUT AN AXIS COMMON TO THE PLANES OF THE TRANSPARENCIES AND SUBSTANTIALLY AT THE GEOMETRICAL CENTER OF THE OTHER TRANSPARENCY AND FOR HOLDING SAID FIRST TRANSPARENCY FOR REMOVAL AND REPLACEMENT BY HAND; MEANS INCLUDING A COMPASS ROSE AND COOPERATING POINTER FOR INDICATING THE DIRECTION OF A COURSE TO BE FOUND WHEN SAID PARALLEL LINES ALIGN WITH OR PARALLEL AN IMAGINARY LINE EXTENDING BETWEEN TWO LOCATION POINTS ON SAID SUBJECT MATTER, SAID HOLDING MEANS HAVING MEANS FOR CAUSING DIFFUSED LIGHT TO PASS THROUGH SAID SUPERPOSED TRANSPARENCIES TO A SIGHT OPENING; AND A LENS IN SAID SIGHT OPENING TO MAGNIFY THE INDICIA ON THE TRANSPARENCIES.
Claim 2
Dependent Claim
180 words
A COURSE FINDER COMPRISING A FIRST TRANSPARENCY DISPLAYING GEOGRAPHICAL SUBJECT MATTER INCLUDING INDICIA DENOTING LOCATION POINTS AND COMPRISING A PHOTOGRAPHIC FILM SUPPORTED IN A FRAME; A SECOND TRANSPARENCY HAVING INDICIA CONSISTING OF A PLURALITY OF SPACED PARALLEL LINES; MEANS FOR HOLDING SAID TRANSPARENCIES IN SUPERPOSED POSITION FOR SIMULTANEOUS VIEWING BY LIGHT TRANSMITTED THROUGH THE TRANSPARENCIES, SAID MEANS PROVIDING FOR THE ROTATION OF ONE OF SAID TRANSPARENCIES THROUGH AN ARC OF AT LEAST 180* RELATIVE TO THE OTHER ABOUT AN AXIS COMMON TO THE PLANES OF THE TRANSPARENCIES AND SUBSTANTIALLY AT THE GEOMETRICAL CENTER OF THE OTHER TRANSPARENCY AND FOR HOLDING SAID FIRST TRANSPARENCY FOR REMOVAL AND REPLACEMENT BY HAND; MEANS INCLUDING A COMPASS ROSE AND COOPERATING POINTER FOR INDICATING THE DIRECTION OF A COURSE TO BE FOUND WHEN SAID PARALLEL LINES ALIGN WITH OR PARALLEL AN IMAGINARY LINE EXTENDING BETWEEN TWO LOCATION POINTS ON SAID SUBJECT MATTER, SAID HOLDING MEANS HAVING MEANS FOR CAUSING DIFFUSED LIGHT TO PASS THROUGH SAID SUPERPOSED TRANSPARENCIES TO A SIGHT OPENING; AND A LENS IN SAID SIGHT OPENING TO MAGNIFY THE INDICIA ON THE TRANSPARENCIES.
References Cited (Backward Citations)
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US1625369A
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US2007986A
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US2114652A
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US2210773A
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US2737741A
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US2948975A
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |