Patent US2432440A successfully refreshed from Google Patents.
US2432440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lubfilcatins
Assignee: —
•
Filing: —
•
Granted: 1947-12-09
•
Expires: 1964-12-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:10
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M101/00; C10M101/02; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/067; C10M2219/00; C10M2219/02; C10M2219/022; C10N; C10N2040/00; C10N2040/135; C10N2040/25; C10N2060/00; C10N2060/10; C10N2070/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2142916A
Cited
US2314530A
Cited
US2020661A
Cited
US1975987A
Cited
US2034837A
Cited
US2045306A
Cited
US2222431A
Cited
US2159908A
Cited
US2356843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |