Patent US3448760A successfully refreshed from Google Patents.
US3448760A
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US
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Coupler assembly
Assignee: Allied Healthcare Products Inc
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Filing: 1966-06-08
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Granted: 1969-06-10
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Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 Bidwell Chapman Cranage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/60; F16L37/08; F16L37/084; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/698; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87965; Y10T403/00; Y10T403/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425049A
Cited
GB771968A
Cited
US2908511A
Cited
US3108825A
Cited
US3194588A
Cited
US3170667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |