US3557570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant metering device
Assignee: Individual
•
Filing: 1969-03-10
•
Granted: 1971-01-26
•
Expires: 1989-03-10
Abstract
Abstract AN INJECTOR TYPE REFRIGERANT METERING DEVICE FOR USE IN PLACE OF STANDARD THERMOSTATIC OR AUTOMATIC EXPANSION VALVES, HIGH OR LOW SIDE FLOATS, CAPILLARY TUBE METERING DEVICES OR ANY OTHER CONVENTIONAL METHOD OF METERING LIQUID REFRIGERANT FROM THE HIGH SIDE TO THE LOW SIDE OF A COMPRESSION TYPE REFRIGERATION SYSTEM.
Inventors
- 👤 Paul H Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:17
CPC Classifications
F; F25; F25B; F25B41/00; F25B47/00; F25B47/02; F25B47/022; F25B2341/00; F25B2341/001; F25B2341/0012; F25B2500/00; F25B2500/01; F25B2500/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |