Patent US1739957A successfully refreshed from Google Patents.
US1739957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of ammonia as a lubricant
Assignee: ARTHUR B LAMB
•
Filing: 1926-06-24
•
Granted: 1929-12-17
•
Expires: 1946-06-24
Abstract
No abstract record available.
Inventors
- 👤 Frank A Ernst
- 👤 Charles H Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:07
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C10; C10M; C10M3/00; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/16; C10M2201/18; C10N; C10N2050/00; C10N2050/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1932-12-16 | 1933-06-17 | 1933-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-12-16 | 1937-06-17 | 1937-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-12-16 | 1941-06-17 | 1941-12-17 | $7700.00 | Window Closed / Lapsed |