US3380470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow regulator with radially expanding elastomeric block
Assignee: Texsteam Inc
•
Filing: 1965-11-30
•
Granted: 1968-04-30
•
Expires: 1985-11-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Jesse L Culpepper
- 👤 Norman H Sachnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/20; F16K1/00; F16K1/12; F16K1/126; F16K31/00; F16K31/12; F16K31/126; Y; Y10; Y10T; Y10T137/00; Y10T137/5109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US607492A
Cited
US1911905A
Cited
US2475748A
Cited
US2611438A
Cited
US2857138A
Cited
US2917269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |