US2444720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lithium base greases
Assignee: Shell Development Co
•
Filing: 1945-10-17
•
Granted: 1948-07-06
•
Expires: 1965-10-17
Abstract
No abstract record available.
Inventors
- 👤 Bell James Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:28
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2205/00; C10M2205/16; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/18; C10M2207/20; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1753659A
Cited
US2350906A
Cited
US2363013A
Cited
US2390450A
Cited
US2383904A
Cited
US2382531A
Cited
US2383906A
Cited
US2351384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |