US2618908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator with interengaging piston and seat insert
Assignee: WELDIT Inc
•
Filing: 1949-05-05
•
Granted: 1952-11-25
•
Expires: 1969-05-05
Abstract
No abstract record available.
Inventors
- 👤 William D Salter
- 👤 Otis L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:34
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/109; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/599; Y10T137/7504; Y10T137/7613; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7822; Y10T137/7823; Y10T137/7825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US483979A
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US749974A
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US1069188A
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US1800995A
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US2057150A
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US2188850A
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US2306060A
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US2487089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |