US2916893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating system with hot gas defrosting means and adapted for use with a low temperature compressor
Assignee: MERCER ENGINEERING Co
•
Filing: 1954-02-01
•
Granted: 1959-12-15
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Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Kramer Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:40
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2455421A
Cited
US2555161A
Cited
US2530440A
Cited
US2624179A
Cited
US2694904A
Cited
US2724245A
Cited
US2729950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |