US3308633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling refrigeration system
Assignee: Individual
•
Filing: 1964-09-02
•
Granted: 1967-03-14
•
Expires: 1984-09-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard W Kritzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:00
CPC Classifications
A; A47; A47J; A47J39/00; A47J39/02; A47B; A47B31/00; A47B31/02; F; F25; F25B; F25B29/00; F25B29/003; F25D; F25D23/00; F25D23/12; F25D31/00; F25D31/005; Y; Y10; Y10S; Y10S165/00; Y10S165/918; Y10S165/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ARTICLE OF FURNITURE COMPRISING (A) A TABLE TOP, (B) MEANS FOR SUPPORTING SAID TABLE TOP, (C) A HEAT EXCHANGER SUPPORTED BY SAID TABLE TOP IN POSITION TO SUPPORT ARTICLES TO BE KEPT COOL, (D) ANOTHER HEAT EXCHANGER SUPPORTED BY SAID TABLE TOP IN POSITION TO SUPPORT ARTICLES TO BE KEPT WARM, AND (E) MEANS FOR FEEDING REFRIGERANT THROUGH SAID HEAT EXCHANGERS IN A REFRIGERATION CYCLE EFFECTIVE TO COOL SAID FIRST MENTIONED HEAT EXCHANGER AND HEAT SAID OTHER HEAT EXCHANGER.
Claim 2
Dependent Claim
80 words
AN ARTICLE OF FURNITURE COMPRISING (A) A TABLE TOP, (B) MEANS FOR SUPPORTING SAID TABLE TOP, (C) A HEAT EXCHANGER SUPPORTED BY SAID TABLE TOP IN POSITION TO SUPPORT ARTICLES TO BE KEPT COOL, (D) ANOTHER HEAT EXCHANGER SUPPORTED BY SAID TABLE TOP IN POSITION TO SUPPORT ARTICLES TO BE KEPT WARM, AND (E) MEANS FOR FEEDING REFRIGERANT THROUGH SAID HEAT EXCHANGERS IN A REFRIGERATION CYCLE EFFECTIVE TO COOL SAID FIRST MENTIONED HEAT EXCHANGER AND HEAT SAID OTHER HEAT EXCHANGER.
References Cited (Backward Citations)
US2412774A
Cited
US2504217A
Cited
US2748573A
Cited
US2910838A
Cited
GB898201A
Cited
US3111166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |