US2591407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: Individual
•
Filing: 1946-01-11
•
Granted: 1952-04-01
•
Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Richard T Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE117816C
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DE192499C
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US717990A
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US1279468A
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US1659263A
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US1807200A
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US1715801A
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US1995949A
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US1893859A
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GB396308A
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US2190464A
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US2296145A
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US2354283A
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US2393805A
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US2483572A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |