US1587568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication
Assignee: Copper Plate Sheet & Tube Co
•
Filing: 1921-10-01
•
Granted: 1926-06-08
•
Expires: 1941-10-01
Abstract
No abstract record available.
Inventors
- 👤 William E Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:28
CPC Classifications
C; C10; C10M; C10M177/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2203/00; C10M2203/10; C10M2203/108; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10; C10N2070/00
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) | 1929-06-07 | 1929-12-07 | 1930-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-06-07 | 1933-12-07 | 1934-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-06-07 | 1937-12-07 | 1938-06-08 | $7700.00 | Window Closed / Lapsed |