Patent US3494640A successfully refreshed from Google Patents.
US3494640A
Expired / Lapsed
US
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Friction-type joint with stress concentration relief
Assignee: Kobe Inc
•
Filing: 1967-10-13
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Granted: 1970-02-10
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Expires: 1987-10-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Coberly
- 👤 Francis Barton Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:10
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/02; F16D; F16D1/00; F16D1/02; F16D1/04; F16D1/05; F16D1/06; F16D1/08; F16D1/09; F16D1/092; Y; Y10; Y10T; Y10T403/00; Y10T403/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899806A
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US3126214A
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GB190719113A
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US1188485A
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US2564670A
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US2450452A
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US2671949A
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US2926940A
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US3142901A
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US2992479A
Cited
US3114566A
Cited
US3287034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |