US2507882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-tapping screw
Assignee: BERMACK Co
•
Filing: 1947-03-05
•
Granted: 1950-05-16
•
Expires: 1967-03-05
Abstract
No abstract record available.
Inventors
- 👤 Benof Z Berman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/001; F16B25/0015; F16B25/0036; F16B25/0078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551354A
Cited
DE440367C
Cited
US1288893A
Cited
US1909476A
Cited
US2165009A
Cited
US2232336A
Cited
US2278377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |