US3445148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous bearings and products thereof
Assignee: Rotron Inc
•
Filing: 1967-06-08
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Granted: 1969-05-20
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Expires: 1987-06-08
Abstract
No abstract record available.
Inventors
- 👤 Dwight E Harris
- 👤 Peter P Grad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:45
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C33/104; B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F3/1109; F16C33/14; F16C33/145; B22F2998/00; F16C17/00; F16C17/02; F16C2220/00; F16C2220/20; F16C2223/00; F16C2223/02; F16C2223/04; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/902; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2615766A
Cited
US2894792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |