US3509903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated rotary plug valve
Assignee: Mueller Co
•
Filing: 1968-07-17
•
Granted: 1970-05-05
•
Expires: 1988-07-17
Abstract
No abstract record available.
Inventors
- 👤 Earl W Lowe
- 👤 Carl E Floren
- 👤 Lawrence F Luckenbill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:59
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/0257; F16K5/0271; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2746478A
Cited
US2653791A
Cited
US2829668A
Cited
US2829667A
Cited
US2898081A
Cited
US3004550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |