US2621017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packed valve
Assignee: UNION STEAM PUMP Co
•
Filing: 1947-10-22
•
Granted: 1952-12-09
•
Expires: 1967-10-22
Abstract
No abstract record available.
Inventors
- 👤 Reinhard A Yohpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:50
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1025; Y; Y10; Y10S; Y10S137/00; Y10S137/906; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409393A
Cited
US1716896A
Cited
US1654772A
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US1844159A
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US1963685A
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US2329576A
Cited
US2521314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |