Patent US2922491A successfully refreshed from Google Patents.
US2922491A
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US
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Lubrication by moving gas-suspended particles
Assignee: Individual
•
Filing: 1953-08-07
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Granted: 1960-01-26
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Expires: 1973-08-07
Abstract
No abstract record available.
Inventors
- 👤 Macks Elmer Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:55
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0467; F16H57/0469; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6696; F16H57/041; F16N; F16N15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US744101A
Cited
US1128059A
Cited
US1654509A
Cited
US2367946A
Cited
US2470136A
Cited
US2622993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |