Patent US3355978A successfully refreshed from Google Patents.
US3355978A
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Assignee: LO DENSE FIXINGS RUGBY Ltd
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Filing: 1965-10-07
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Granted: 1967-12-05
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Expires: 1985-10-07
Abstract
No abstract record available.
Inventors
- 👤 Flintoft Trevor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:33
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/06; Y; Y10; Y10S; Y10S411/00; Y10S411/92
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A NAIL COMPRISING A SHANK HAVING A POINTED LEADING END AND A REAR HEAD END AND HAVING AN OPEN RECESS IN THE SIDE THEREOF A DISTANCE FROM SAID REAR HEAD END BUT NEARER TO THE HEAD END THAT TO THE POINTED LEADING END; AND A CROSS PIECE BLADE SUBSTANTIALLY THINNER THAN THE THICKNESS OF THE SHANK AND RIGIDLY AND PERMANENTLY SECURED IN SAID OPEN RECESS SO AS TO BE TRANSVERSE TO THE SHANK AND PROVIDE TWO ARMS EXTENDING LATERALLY THEREFROM, SAID BLADE LYING FLATWISE AGAINST THE SHANK SUBSTANTIALLY IN AN AXIAL PLANE OF THE SHANK FOR SELF-BURYING EDGEWISE CUTTING ENTRY INTO SOFT MATERIAL UPON THE SHANK BEING DRIVEN THROUGH SAID MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |