US3299650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled condenser fan arrangement for control of head pressure in a refrigeration or air conditioning system and method of installing the same
Assignee: Kramer Trenton Co
•
Filing: 1965-06-04
•
Granted: 1967-01-24
•
Expires: 1985-06-04
Abstract
No abstract record available.
Inventors
- 👤 Kramer Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:24
CPC Classifications
F; F24; F24F; F24F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF INSTALLING AN AIR COOLED CONDENSER FAN ARRANGEMENT FOR CONTROL OF HEAD PRESSURE IN A REFRIGERATION OR AIR CONDITIONING SYSTEM HAVING A MAIN FAN OR FANS WHICH METHOD INCLUDES THE STEP OF OPERATIVELY ATTACHING AT LEAST ONE AUXILIARY FAN AT THE FACE OF THE CONDENSER OPPOSITE TO THE MAIN FAN OR FANS.
Claim 2
Independent Claim
54 words
A METHOD OF INSTALLING AN AIR COOLED CONDENSER FAN ARRANGEMENT FOR CONTROL OF HEAD PRESSURE IN A REFRIGERATION OR AIR CONDITIONING SYSTEM HAVING A MAIN FAN OR FANS WHICH METHOD INCLUDES THE STEP OF OPERATIVELY ATTACHING AT LEAST ONE AUXILIARY FAN AT THE FACE OF THE CONDENSER OPPOSITE TO THE MAIN FAN OR FANS.
References Cited (Backward Citations)
US1767279A
Cited
US2149107A
Cited
US2148254A
Cited
US2403528A
Cited
US2655795A
Cited
US3148514A
Cited
US3138941A
Cited
US3152455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |