US3238574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: Individual
•
Filing: 1964-05-01
•
Granted: 1966-03-08
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Martin
- 👤 Edward G Pewitt
- 👤 Thomas H Fields
- 👤 John G Fetkovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:22
CPC Classifications
G; G21; G21F; G21F7/00; G21F7/02; G21F7/03; G02; G02B; G02B7/00; G02B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN ASSEMBLY COMPRISING A PAIR OF CIRCULAR CONCENTRIC INNER AND OUTER MEMBERS HAVING FACING ANNULAR SURFACES TRANSVERSE TO THE AXES OF THE MEMBERS, A U-SHAPED ALUMINUM RING HAVING ONE LEG OF THE U BONDED TO ONE OF SAID SURFACES, IN INDIUM-SILVER RING APPLIED TO THE OTHER OF SAID SURFACES AND ENGAGING THE OTHER LEG OF THE U OF THE ALUMINUM RING, A RELATIVELY SLIPPERY FILLER RING LOCATED IN
Claim 2
Dependent Claim
68 words
AN ASSEMBLY COMPRISING A PAIR OF CIRCULAR CONCENTRIC INNER AND OUTER MEMBERS HAVING FACING ANNULAR SURFACES TRANSVERSE TO THE AXES OF THE MEMBERS, A U-SHAPED ALUMINUM RING HAVING ONE LEG OF THE U BONDED TO ONE OF SAID SURFACES, IN INDIUM-SILVER RING APPLIED TO THE OTHER OF SAID SURFACES AND ENGAGING THE OTHER LEG OF THE U OF THE ALUMINUM RING, A RELATIVELY SLIPPERY FILLER RING LOCATED IN
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |