US3511272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow-t construction
Assignee: M&J Valve Co
•
Filing: 1967-12-11
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Granted: 1970-05-12
•
Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Francis M Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:09
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/02; F16L41/021; F17; F17D; F17D3/00; F17D3/03; F17D3/08; F16L2101/00; F16L2101/40; Y; Y10; Y10T; Y10T137/00; Y10T137/794
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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |