US3474827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler and adapter and seal structure therefor
Assignee: Emco Wheaton Inc
•
Filing: 1966-02-09
•
Granted: 1969-10-28
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Expires: 1986-02-09
Abstract
No abstract record available.
Inventors
- 👤 Lester P Rosell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:01
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/252; F16L37/28; F16L37/30; F16L37/36; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87965; Y10T137/87973; Y10T137/87981; Y10T137/88046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2744774A
Cited
US2931671A
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US3132869A
Cited
US3188048A
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US3171492A
Cited
US3168125A
Cited
US3251379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |