US2863301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant circulation in refrigerating apparatus
Assignee: American Motors Corp
•
Filing: 1956-03-02
•
Granted: 1958-12-09
•
Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Philipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:28
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0261; F04B39/0207; F25; F25B; F25B31/00; F25B31/002; F25B2400/00; F25B2400/05; F25B2400/052; F25B2400/054; F25B41/00; F25B41/20; F25B41/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US580049A
Cited
USRE23821E
Cited
US2145354A
Cited
US2048025A
Cited
US2128388A
Cited
US2418853A
Cited
US2555005A
Cited
US2760355A
Cited
US2738652A
Cited
US2766593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |