Patent US2660187A successfully refreshed from Google Patents.
US2660187A
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US
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Fluid pressure regulator structure
Assignee: Puritan Compressed Gas Corp
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Filing: 1950-03-29
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Granted: 1953-11-24
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Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Welty
- 👤 George L Hammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0636; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1774; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/8158; Y10T137/8175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |