US2080666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulating valve
Assignee: HLINOIS ENGINEERING Co
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Filing: 1936-02-15
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Granted: 1937-05-18
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Expires: 1956-02-15
Abstract
No abstract record available.
Inventors
- 👤 Richard W Leutwiler
- 👤 Eichholz William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0636; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/7812; Y10T137/7818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-05-17 | 1940-11-16 | 1941-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-17 | 1944-11-16 | 1945-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-17 | 1948-11-16 | 1949-05-18 | $7700.00 | Window Closed / Lapsed |