US2738573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making an internally threaded polygonal article
Assignee: JERVIS MIDDLEVILLE CORP
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Filing: 1951-09-21
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Granted: 1956-03-20
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Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
- 👤 Fred M Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:11
CPC Classifications
B; B23; B23P; B23P13/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1416412A
Cited
US1736495A
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US1860605A
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US2009644A
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US2176993A
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US2540457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |