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US2589401A
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Torque testing and calibrating device
Assignee: TNC US Holdings Inc
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Filing: 1947-02-21
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Granted: 1952-03-18
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Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Krahulec Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:30
CPC Classifications
G; G04; G04D; G04D7/00; G04D7/02; G01; G01L; G01L5/00; G01L5/0028; G01L5/0042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1120838A
Cited
US1881756A
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US2113550A
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US2182519A
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US2133763A
Cited
US2441608A
Cited
US2384520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |