US2003564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite lubricant
Assignee: ROBERT ELROY WARK
•
Filing: 1932-06-02
•
Granted: 1935-06-04
•
Expires: 1952-06-02
Abstract
No abstract record available.
Inventors
- 👤 Thorpe William Cowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:15
CPC Classifications
C; C10; C10M; C10M173/00; C10M125/00; C10M125/02; C10M125/22; C10M159/00; C10M159/02; C10M159/04; C10M159/06; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/061; C10M2201/065; C10M2201/066; C10M2201/08; C10M2201/084; C10M2201/16; C10M2201/18; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/18; C10M2207/00; C10M2207/02; C10N; C10N2050/00; C10N2050/01
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) | 1938-06-03 | 1938-12-03 | 1939-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-03 | 1942-12-03 | 1943-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-03 | 1946-12-03 | 1947-06-04 | $7700.00 | Window Closed / Lapsed |