US3370944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous bronze castings for bearing and the like uses
Assignee: NIPPIN OILLESS KOGYO KABUSHIKI
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Filing: 1965-08-10
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Granted: 1968-02-27
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Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Kawasaki Keimin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:32
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/02; C22C9/04; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; F16C2204/00; F16C2204/10
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |