US3472536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for connecting a flexible tube to a rigid tube
Assignee: BASIL D INGRAM
•
Filing: 1968-04-10
•
Granted: 1969-10-14
•
Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Basil D Ingram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L33/08; F16L21/00; F16L21/002; F16L21/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US590258A
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CA725513A
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US1040039A
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US1765362A
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GB451119A
Cited
US2165926A
Cited
US2261948A
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US2464653A
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US3223425A
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US3387839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |