US2418853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus in which the pressure in the crankcase of the compressor is controlled
Assignee: Lanteris Space LLC
•
Filing: 1944-11-29
•
Granted: 1947-04-15
•
Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 Malcolm G Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:15
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; F25B31/004; F25B41/00; F25B41/20; F25B41/22; F25B2400/00; F25B2400/05; F25B2400/052; F25B2400/054
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2286961A
Cited
US2363273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |