US2744269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe threading die head assembly
Assignee: Union Carbide Corp
•
Filing: 1951-11-20
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Granted: 1956-05-08
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Karl K Kerr
- 👤 Jr Edward J Kleber
- 👤 Samuel H S Raub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:15
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/22; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/557; Y10T408/558; Y10T408/89; Y10T408/904; Y10T408/9044; Y10T408/9045; Y10T408/909; Y10T408/9095; Y10T408/9097
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US196710A
Cited
US269981A
Cited
US1610097A
Cited
DE469143C
Cited
US1892904A
Cited
US2096810A
Cited
US2280013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |