US3218463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inspection apparatus
Assignee: Industrial Dynamics Co Ltd
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Filing: 1961-07-26
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Granted: 1965-11-16
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Fredrick L Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:45
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/90; G01N21/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN COMBINATION FOR DETERMINING THE PRESENCE OF A CAP ON THE OPEN MOUTH OF A BOTTLE CONTAINING LIQUID IN THE BOTTLE TO A PARTICULAR LEVEL, MEANS DISPOSED RELATIVE TO THE BOTTLE FOR DIRECTING LIGHT IN A PARTICULAR DIRECTION TOWARD THE BOTTLE FOR DIFFUSION OF THE LIGHT BY THE LIQUID THROUGH THE MOUTH OF THE BOTTLE, LIGHT-RESPONSIVE MEANS SPACED FROM THE BOTTLE AND DISPLACED FROM THE PARTICULAR DIRECTION RELATIVE TO THE BOTTLE AND THE LIGHT-DIRECTING MEANS FOR RECEIVING SUCH DIFFUSED LIGHT AND CONTROL MEANS RESPONSIVE TO THE RECEIVED LIGHT FOR PRODUCING SIGNALS HAVING CHARACTERISTICS DEPENDENT UPON SUCH DIFFUSED LIGHT AND UPON THE PRESENCE OR ABSENCE OF A CAP ON THE MOUTH OF A BOTTLE.
Claim 2
Dependent Claim
113 words
IN COMBINATION FOR DETERMINING THE PRESENCE OF A CAP ON THE OPEN MOUTH OF A BOTTLE CONTAINING LIQUID IN THE BOTTLE TO A PARTICULAR LEVEL, MEANS DISPOSED RELATIVE TO THE BOTTLE FOR DIRECTING LIGHT IN A PARTICULAR DIRECTION TOWARD THE BOTTLE FOR DIFFUSION OF THE LIGHT BY THE LIQUID THROUGH THE MOUTH OF THE BOTTLE, LIGHT-RESPONSIVE MEANS SPACED FROM THE BOTTLE AND DISPLACED FROM THE PARTICULAR DIRECTION RELATIVE TO THE BOTTLE AND THE LIGHT-DIRECTING MEANS FOR RECEIVING SUCH DIFFUSED LIGHT AND CONTROL MEANS RESPONSIVE TO THE RECEIVED LIGHT FOR PRODUCING SIGNALS HAVING CHARACTERISTICS DEPENDENT UPON SUCH DIFFUSED LIGHT AND UPON THE PRESENCE OR ABSENCE OF A CAP ON THE MOUTH OF A BOTTLE.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |