Patent US2445978A successfully refreshed from Google Patents.
US2445978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Socket head screw
Assignee: Individual
•
Filing: 1945-05-07
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Granted: 1948-07-27
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Expires: 1965-05-07
Abstract
No abstract record available.
Inventors
- 👤 Domnic V Stellin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/005; F; F16; F16B; F16B23/00; F16B23/0007; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US308246A
Cited
US1075710A
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US1894034A
Cited
US2046839A
Cited
US2182568A
Cited
US2173707A
Cited
US2285461A
Cited
US2216382A
Cited
US2312471A
Cited
US2402342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |