Patent US3203290A successfully refreshed from Google Patents.
US3203290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microtomes
Assignee: FRIGISTOR LAB Ltd
•
Filing: 1963-06-07
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Granted: 1965-08-31
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Ashby John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:58
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/06; G01N1/28; G01N1/42; G01N2001/061; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A MICROTOME COMPRISING A BLADE, A FIRST THERMOELECTRIC ELEMENT THERMALLY CONNECTED TO THE BLADE, FIRST CONTROL MEANS ADJUSTABLE TO CONTROL THE FLOW OF CURRENT TO THE FIRST THERMOELECTRIC ELEMENT AND HENCE THE TRANSFER OF HEAT BETWEEN THE BLADE AND THE ELEMENT, A STAGE, A SECOND THERMOELECTRIC ELEMENT THERMALLY CONNECTED THE STAGE, SECOND CONTROL MEANS ADJUSTABLE INDEPENDENTLY OF THE ADJUSTMENT OF THE FIRST CONTROL MEANS TO CONTROL THE FLOW OF CURRENT TO THE SECOND THERMOELECTRIV ELEMENT AND HENCE THE TRANSFER OF HEAT BETWEEN THE STAGE AND THE SECOND THERMOELECTRIC ELEMENT, AND AN ANTI-ROLL BAR ATTACHED TO THE BLADE, WHEREIN EACH THERMOELECTRIV ELEMENT INCLUDES BLOCKS OF THERMOELECTRIC MATERIAL OF TWO TYPES ARRANGED IN A PLANAR ARRAY AND CONNECTED ELECTRICALLY IN SERIES BY THERMALLY AND ELECTRICALLY CONDUCTING MEMBERS SUCH THAT ADJACENT BLOCKS ARE OF OPPOSITE CONDUCTIVITY TYPE, AND EACH THERMOELECTRIC ELEMENT HAS ON ONE OR BOTH OF ITS FACES AN ELECTRICALLY INSULATING BUT THERMALLY CONDUCTING LAYER.
Claim 2
Dependent Claim
153 words
A MICROTOME COMPRISING A BLADE, A FIRST THERMOELECTRIC ELEMENT THERMALLY CONNECTED TO THE BLADE, FIRST CONTROL MEANS ADJUSTABLE TO CONTROL THE FLOW OF CURRENT TO THE FIRST THERMOELECTRIC ELEMENT AND HENCE THE TRANSFER OF HEAT BETWEEN THE BLADE AND THE ELEMENT, A STAGE, A SECOND THERMOELECTRIC ELEMENT THERMALLY CONNECTED THE STAGE, SECOND CONTROL MEANS ADJUSTABLE INDEPENDENTLY OF THE ADJUSTMENT OF THE FIRST CONTROL MEANS TO CONTROL THE FLOW OF CURRENT TO THE SECOND THERMOELECTRIV ELEMENT AND HENCE THE TRANSFER OF HEAT BETWEEN THE STAGE AND THE SECOND THERMOELECTRIC ELEMENT, AND AN ANTI-ROLL BAR ATTACHED TO THE BLADE, WHEREIN EACH THERMOELECTRIV ELEMENT INCLUDES BLOCKS OF THERMOELECTRIC MATERIAL OF TWO TYPES ARRANGED IN A PLANAR ARRAY AND CONNECTED ELECTRICALLY IN SERIES BY THERMALLY AND ELECTRICALLY CONDUCTING MEMBERS SUCH THAT ADJACENT BLOCKS ARE OF OPPOSITE CONDUCTIVITY TYPE, AND EACH THERMOELECTRIC ELEMENT HAS ON ONE OR BOTH OF ITS FACES AN ELECTRICALLY INSULATING BUT THERMALLY CONDUCTING LAYER.
References Cited (Backward Citations)
US633310A
Cited
US2292973A
Cited
US2590725A
Cited
US2643579A
Cited
US2629230A
Cited
GB768337A
Cited
US3091144A
Cited
US2901944A
Cited
US2942051A
Cited
US2991628A
Cited
US3137184A
Cited
US3093135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |