Patent US2445227A successfully refreshed from Google Patents.
US2445227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication of high-speed shafts or spindles
Assignee: Individual
•
Filing: 1944-10-12
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Granted: 1948-07-13
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Expires: 1964-10-12
Abstract
No abstract record available.
Inventors
- 👤 Clair Camille Clare Sprankl Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:46
CPC Classifications
F; F16; F16N; F16N31/00; F16N31/02; D; D01; D01H; D01H7/00; D01H7/02; D01H7/04; D01H7/20; Y; Y10; Y10S; Y10S277/00; Y10S277/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |