Patent US3202211A successfully refreshed from Google Patents.
US3202211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Motors Liquidation Co
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Filing: 1961-05-16
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Granted: 1965-08-24
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Expires: 1981-05-16
Abstract
No abstract record available.
Inventors
- 👤 James W Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:18
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A HEAT EXCHANGER UNIT COMPRISING IN COMBINATION, A PLURALITY OF SUBSTANTIALLY FLAT SHEETS, EACH MOVING A PLURALITY OF RELATIVELY LARGE DIAMETER TUBULAR PROJECTIONS INTEGRAL THEREWITH, EACH RELATIVELY LARGE DIAMETER TUBULAR PROJECTION HAVING A RELATIVELY SMALL DIAMETER TUBULAR PROJECTION THEREIN EXTENDING IN A DIRECTION SUBSTANTIALLY OPPOSITE SAID FIRST NAMED TUBULAR PROJECTION AND FORMING A TUBE SECTION, ADJACENT TUBE SECTIONS ON ADJACENT FLAT SHEETS WITH TERMINAL END PORTIONS THEREOF BEING LOCATED IN ABUTTING RELATIONSHIP, AND MEANS FOR BONDING SUCH ABUTTING TUBE SECTIONS TOGETHER FOR FORMING CONTINOUS FLUID CONDUITS.
Claim 2
Dependent Claim
86 words
A HEAT EXCHANGER UNIT COMPRISING IN COMBINATION, A PLURALITY OF SUBSTANTIALLY FLAT SHEETS, EACH MOVING A PLURALITY OF RELATIVELY LARGE DIAMETER TUBULAR PROJECTIONS INTEGRAL THEREWITH, EACH RELATIVELY LARGE DIAMETER TUBULAR PROJECTION HAVING A RELATIVELY SMALL DIAMETER TUBULAR PROJECTION THEREIN EXTENDING IN A DIRECTION SUBSTANTIALLY OPPOSITE SAID FIRST NAMED TUBULAR PROJECTION AND FORMING A TUBE SECTION, ADJACENT TUBE SECTIONS ON ADJACENT FLAT SHEETS WITH TERMINAL END PORTIONS THEREOF BEING LOCATED IN ABUTTING RELATIONSHIP, AND MEANS FOR BONDING SUCH ABUTTING TUBE SECTIONS TOGETHER FOR FORMING CONTINOUS FLUID CONDUITS.
References Cited (Backward Citations)
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Cited
US1787942A
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US2045657A
Cited
US2146352A
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US2821772A
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |