US2348460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined hand and hydraulic valve operator
Assignee: Crane Co
•
Filing: 1941-08-19
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Granted: 1944-05-09
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Expires: 1961-08-19
Abstract
No abstract record available.
Inventors
- 👤 Fennema Richard
- 👤 Craene Edmond P De
- 👤 Carl A Dopp
- 👤 Frederick R Yenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:51
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/50; F16K31/12; F16K31/14; F16K31/143; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/19484; Y10T74/19493; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-09 | 1947-11-08 | 1948-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-09 | 1951-11-08 | 1952-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-09 | 1955-11-08 | 1956-05-09 | $7700.00 | Window Closed / Lapsed |