USRE27339E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dornbos turnbuckles
Assignee: —
•
Filing: 1970-05-25
•
Granted: 1972-04-11
•
Expires: 1990-05-25
Abstract
Abstract MANUFACTURING STEPS OF EXTRUDING TUBULAR METAL BAR STOCK OF GREATER WIDTH THAN THICKNESS AND HVVING EDGES OF REDUCED THICKNESS, WITH AN INTERNAL BORE OF RECTANGULAR CROSS SECTION IN THE THICKER PORTION OF THE TUBE, CUTTING THE TUBE TRANSVERSELY INTO SLUGS OF LESSER WIDTH THAN THE THICKNESS OF THE TUBE, BORING ALINED HOLES INTO THE ENDS OF THE SLUGS THROUGH NARROWER ENDS FORMED FROM THE REDUCED EDGES AND INTO THE ENDS OF THE OBLONG OPENING FORMED BY THE EXTRUSION, AND TAPPING THE HOLES WITH OPPOSITELY PITCHED THREADS AT OPPOSITE ENDS OF THE SLUGS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
B; B21; B21D; B21D53/00; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; B23; B23P; B23P13/00; B23P13/04; F; F16; F16B; F16B7/00; F16B7/06; F16G; F16G11/00; F16G11/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49606; Y10T29/49789; Y10T29/49798; Y10T403/00; Y10T403/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |