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US2979196A
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Automatic pipe coupling inspector
Assignee: Republic Steel Corp
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Filing: 1955-06-20
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Granted: 1961-04-11
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 William C Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:30
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628767A
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US2221570A
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US2357512A
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US2439184A
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US2566767A
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US2563254A
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US2651412A
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US2751617A
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |