US2612340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary plug valve
Assignee: Individual
•
Filing: 1948-05-12
•
Granted: 1952-09-30
•
Expires: 1968-05-12
Abstract
No abstract record available.
Inventors
- 👤 Milton P Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:18
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/18; F16K5/184; F16K5/185; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4379
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US733905A
Cited
US1250041A
Cited
US1760951A
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US1803773A
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US2234434A
Cited
US2290349A
Cited
US2308300A
Cited
US2376975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |