Patent US3273977A successfully refreshed from Google Patents.
US3273977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing of sintered metal containing interstitial solid lubricant
Assignee: Polymer Corp
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Filing: 1964-06-01
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Granted: 1966-09-20
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 William J Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/0094; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ARTICLE OF MANUFACTURE COMPRISED OF SINTERED METAL AND A SOLID LUBRICANT HELD WITHIN THE INTERESTS OF SUCH SINTERED METAL, SAID METAL BEING SELECTED FROM THE CLASS CONSISTING OF COPPER AND SILVER AND SAID SOLID LUBRICANT BEING THERMALLY DEGRADED POLYTETRAFLUOROETHYLENE.
Claim 2
Dependent Claim
40 words
AN ARTICLE OF MANUFACTURE COMPRISED OF SINTERED METAL AND A SOLID LUBRICANT HELD WITHIN THE INTERESTS OF SUCH SINTERED METAL, SAID METAL BEING SELECTED FROM THE CLASS CONSISTING OF COPPER AND SILVER AND SAID SOLID LUBRICANT BEING THERMALLY DEGRADED POLYTETRAFLUOROETHYLENE.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |