Patent US3288494A successfully refreshed from Google Patents.
US3288494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Union coupling
Assignee: Cajon Co
•
Filing: 1965-08-11
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Granted: 1966-11-29
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Expires: 1985-08-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis J Callahan
- 👤 Erling G Wennerstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0212; F16L19/0218; F16L19/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US344312A
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US392931A
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DE563339C
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US2208353A
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US2335040A
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US2381829A
Cited
FR1063620A
Cited
US2795437A
Cited
US2967068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |