US2861588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure regulators
Assignee: Worthington Corp
•
Filing: 1954-12-30
•
Granted: 1958-11-25
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Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 John L Cronk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:34
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/08; B67D1/12; B67D1/1252; G; G05; G05D; G05D16/00; G05D16/04; G05D16/0402; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7822; Y10T137/7823; Y10T137/7826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US214218A
Cited
US282069A
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US868599A
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US997272A
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US1550668A
Cited
US1631262A
Cited
US1658951A
Cited
US2737202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |