US3544257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler assembly
Assignee: Allied Healthcare Products Inc
•
Filing: 1969-02-05
•
Granted: 1970-12-01
•
Expires: 1989-02-05
Abstract
No abstract record available.
Inventors
- 👤 Bidwell C Cranage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:43
CPC Classifications
F; F16; F16L; F16L41/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/698
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |