US1696642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant lubricant and method of lubricating refrigerating machinery
Assignee: Carbide and Carbon Chemicals Corp
•
Filing: 1924-10-09
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Granted: 1928-12-25
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Expires: 1944-10-09
Abstract
No abstract record available.
Inventors
- 👤 Robert F Massa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:44
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/08; C10M105/10; C10M105/14; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
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) | 1931-12-25 | 1932-06-25 | 1932-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-25 | 1936-06-25 | 1936-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-25 | 1940-06-25 | 1940-12-25 | $7700.00 | Window Closed / Lapsed |