US2837005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding helical coil for a wood screw
Assignee: Hans Sickinger Co
•
Filing: 1953-05-21
•
Granted: 1958-06-03
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Expires: 1973-05-21
Abstract
No abstract record available.
Inventors
- 👤 Gaul Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:35
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/12; F16B13/124; F16B13/04; F16B13/08; F16B13/0883; F16B37/00; F16B37/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1199624A
Cited
GB273780A
Cited
US1966520A
Cited
US2099450A
Cited
US2581399A
Cited
FR1038680A
Cited
GB748338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |