US2193248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge valve
Assignee: HYDRAULIC PRESS Corp Inc
•
Filing: 1937-02-25
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Granted: 1940-03-12
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Expires: 1957-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ernst Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:46
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18; B30B15/183; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7856; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86139
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) | 1943-03-12 | 1943-09-11 | 1944-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-12 | 1947-09-11 | 1948-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-12 | 1951-09-11 | 1952-03-12 | $7700.00 | Window Closed / Lapsed |