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US2706404A
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US
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Spring testing apparatus
Assignee: Madison Management Group Inc
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Filing: 1951-09-28
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Granted: 1955-04-19
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Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 Ervin E Schiesel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:01
CPC Classifications
G; G01; G01N; G01N3/00; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0288; G01N2203/0292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1921793A
Cited
US1908412A
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US2170197A
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US2407591A
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US2467539A
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US2612041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |