US2967556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal screw fastener with edgewise flexible panel engaging arms
Assignee: Prestole Corp
•
Filing: 1959-04-16
•
Granted: 1961-01-10
•
Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Jaworski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:38
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/044; Y; Y10; Y10S; Y10S411/00; Y10S411/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391046A
Cited
US2173198A
Cited
US2385893A
Cited
US2516274A
Cited
US2668998A
Cited
US2639311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |