US2417196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for testing helical compression springs
Assignee: Parker Appliance Co
•
Filing: 1943-11-10
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Granted: 1947-03-11
•
Expires: 1963-11-10
Abstract
No abstract record available.
Inventors
- 👤 Emmett C Hartley
- 👤 Herbert L Ivins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
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)
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US2088372A
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US2241794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |