US3241930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction bearings
Assignee: AT&T Inc
•
Filing: 1963-04-03
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Granted: 1966-03-22
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Jeofry S Courtney-Pratt
- 👤 Mathew E Sikorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:29
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/14; F16C2223/00; F16C2223/30; F16C2226/00; F16C2226/50; F16C2226/60; F16C33/121; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A MACHINE BEARING COMPRISING TWO RELATIVELY MOVING SURFACES, ONE SUPPORTING THE OTHER, AT LEAST ON OF SAID SURFACES BEING FORMED OF A METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, GADOLINIUM, DYSPROSIUM, SAMARIUM AND HOLMINUM.
Claim 2
Dependent Claim
35 words
A MACHINE BEARING COMPRISING TWO RELATIVELY MOVING SURFACES, ONE SUPPORTING THE OTHER, AT LEAST ON OF SAID SURFACES BEING FORMED OF A METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, GADOLINIUM, DYSPROSIUM, SAMARIUM AND HOLMINUM.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |