US2431628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot slot screw and driving tool
Assignee: PHEOLL Manufacturing Co
•
Filing: 1942-07-27
•
Granted: 1947-11-25
•
Expires: 1962-07-27
Abstract
No abstract record available.
Inventors
- 👤 Otto W Waarich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; F16B23/0015; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1501222A
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US1797390A
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CH175743A
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US2046837A
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US2058197A
Cited
US2140449A
Cited
US2182568A
Cited
US2206085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |