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Patent US3277240A successfully refreshed from Google Patents.
US3277240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter means for camera-oscilloscope assembly
Assignee: Beattie Coleman Inc
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Filing: 1963-11-12
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Granted: 1966-10-04
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Ernest B Marjoram
- 👤 Arthur M Hedglin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:08
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE COMBINATION OF: AN ENCLOSURE HAVING A VIEWING PORT; A LUMINOUS OBJECT IN THE ENCLOSURE; A CAMERA DIRECTED INTO THE INTERIOR OF THE ENCLOSURE TO PHOTOGRAPH THE LUMINUOUS OBJECT; A FIRST LIGHT-REDUCING FILTER INTERCEPTING THE EXTERIOR LIGHT THAT IS DIRECTED TOWARDS THE INTERIOR OF THE ENCLOSURE THROUGH THE VIEWING PORT, AND A SECOND LIGHT-REDUCING FILTER INTERCEPTING THE LIGHT FROM THE INTERIOR OF THE ENCLOSURE THAT IS DIRECTED TOWARDS THE FILM IN THE CAMERA, WHEREBY THE FIRST FILTER PERMITS OBSERVATION OF THE LUMIOUS OBJECT FROM THE EXTERIOR OF THE ENCLOSURE THROUGH THE VIEWING PORT WITHOUT APPARENT FOGGING OR LOWERING OF CONTRAST OF THE LUMINOUS OBJECT AND THE SECOND FILTER PERMITS PHOTOGRAPHING OF THE LUMINOUS OBJECT BUT COOPERATES WITH THE FIRST FILTER FOR REDUCTION BY TWO SUCCESSIVE STAGES OF THE EXTERIOR LIGHT THAT REACHES THE FILM, SAID TWO FILTERS BEING POLARIZING FILTERS WITH THE SECOND FILTER INTERCEPTING A PORTION OF THE LIGHT FROM THE FIRST FILTER.
Claim 2
Dependent Claim
154 words
THE COMBINATION OF: AN ENCLOSURE HAVING A VIEWING PORT; A LUMINOUS OBJECT IN THE ENCLOSURE; A CAMERA DIRECTED INTO THE INTERIOR OF THE ENCLOSURE TO PHOTOGRAPH THE LUMINUOUS OBJECT; A FIRST LIGHT-REDUCING FILTER INTERCEPTING THE EXTERIOR LIGHT THAT IS DIRECTED TOWARDS THE INTERIOR OF THE ENCLOSURE THROUGH THE VIEWING PORT, AND A SECOND LIGHT-REDUCING FILTER INTERCEPTING THE LIGHT FROM THE INTERIOR OF THE ENCLOSURE THAT IS DIRECTED TOWARDS THE FILM IN THE CAMERA, WHEREBY THE FIRST FILTER PERMITS OBSERVATION OF THE LUMIOUS OBJECT FROM THE EXTERIOR OF THE ENCLOSURE THROUGH THE VIEWING PORT WITHOUT APPARENT FOGGING OR LOWERING OF CONTRAST OF THE LUMINOUS OBJECT AND THE SECOND FILTER PERMITS PHOTOGRAPHING OF THE LUMINOUS OBJECT BUT COOPERATES WITH THE FIRST FILTER FOR REDUCTION BY TWO SUCCESSIVE STAGES OF THE EXTERIOR LIGHT THAT REACHES THE FILM, SAID TWO FILTERS BEING POLARIZING FILTERS WITH THE SECOND FILTER INTERCEPTING A PORTION OF THE LIGHT FROM THE FIRST FILTER.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |