Patent US2726840A successfully refreshed from Google Patents.
US2726840A
Expired / Lapsed
US
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Valve construction
Assignee: Shand and Jurs Co
•
Filing: 1951-12-08
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Granted: 1955-12-13
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Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 Peter C Jurs
- 👤 Joseph P Van Overveen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:09
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US86381A
Cited
US1305365A
Cited
US737706A
Cited
US986184A
Cited
GB197065A
Cited
US1980063A
Cited
US2549689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |