US3399544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system with high side float
Assignee: Carrier Corp
•
Filing: 1967-04-19
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Granted: 1968-09-03
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Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 William T Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
F; F25; F25B; F25B1/00; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/22; F25B1/04; F25B1/053; F25B41/00; F25B41/30; F25B41/31; F25B41/315; F25B49/00; F25B49/02; F25B2339/00; F25B2339/02; F25B2339/024; F25B2339/0242; F25B39/00; F25B39/02; F25B39/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7439; Y10T137/7485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |