US2471850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid polysiloxane lubricants
Assignee: General Electric Co
•
Filing: 1946-09-25
•
Granted: 1949-05-31
•
Expires: 1966-09-25
Abstract
No abstract record available.
Inventors
- 👤 Donald F Wilcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/50; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2229/00; C10M2229/04; C10M2229/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2406671A
Cited
US2416503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |