US2441252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: ROHLM Manufacturing Co Inc
•
Filing: 1944-10-30
•
Granted: 1948-05-11
•
Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Emmett F Sarver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52408; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/88046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US369062A
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DE343553C
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US1462857A
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US1524225A
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US1677598A
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US1797591A
Cited
US2074240A
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US2173210A
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US2267057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |