US3429448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separable coupling
Assignee: Emco Wheaton Inc
•
Filing: 1966-05-09
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Granted: 1969-02-25
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Lester P Rosell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:37
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/50; F16L37/53; B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; B01D29/117; B01D29/50; B01D29/52; B01D29/54; B01D35/00; B01D35/02; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L55/00; F16L55/24; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |