US2541464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid throttling valve
Assignee: Parker Appliance Co
•
Filing: 1944-11-28
•
Granted: 1951-02-13
•
Expires: 1964-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/08; F16K47/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792; Y10T137/8593; Y10T137/86493; Y10T137/86839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1023267A
Cited
US1877102A
Cited
DE598406C
Cited
US2366382A
Cited
US2418325A
Cited
US2354161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |