Patent US2055759A successfully refreshed from Google Patents.
US2273152A
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Hydraulic pressure control for testing machines
Assignee: American Machine and Metals Inc
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Filing: 1938-03-21
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Granted: 1942-02-17
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Expires: 1958-03-21
Abstract
No abstract record available.
Inventors
- 👤 Sonntag Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:50
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/10; Y; Y10; Y10S; Y10S60/00; Y10S60/907; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929
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) | 1945-02-16 | 1945-08-18 | 1946-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-16 | 1949-08-18 | 1950-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-16 | 1953-08-18 | 1954-02-17 | $7700.00 | Window Closed / Lapsed |