US2467461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for valves
Assignee: PATRICK B MCNAMARA
•
Filing: 1943-01-14
•
Granted: 1949-04-19
•
Expires: 1963-01-14
Abstract
No abstract record available.
Inventors
- 👤 Blanding Joseph Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:21
CPC Classifications
F; F02; F02D; F02D15/00; F02D2700/00; F02D2700/03; F02D2700/035; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87748; Y10T137/87756
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1625739A
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DE489502C
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US1657120A
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US1759187A
Cited
FR671428A
Cited
US1881367A
Cited
US2050392A
Cited
US1970546A
Cited
US2329820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |