Patent US2437131A successfully refreshed from Google Patents.
US2437131A
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US
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Fluid operable short stroke device
Assignee: HPM Development Corp
•
Filing: 1943-02-20
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Granted: 1948-03-02
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Expires: 1963-02-20
Abstract
No abstract record available.
Inventors
- 👤 Victor S Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:22
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/02; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1765372A
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US1809068A
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US2006949A
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US2123683A
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US2279964A
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US2218503A
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US2215069A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |