US3287948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold forming articles from lengths of rod, bar or tube
Assignee: National Research Development Corp UK
•
Filing: 1963-06-26
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Granted: 1966-11-29
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Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Alexander John Malcolm
- 👤 Lengyel Bela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:53
CPC Classifications
B; B21; B21K; B21K23/00; B21K23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF COLD-FORMING AN ARTICLE HAVING A SUBSTANTIAL LATERAL PROJECTION FROM A BILLET OF BAR OR TUBE, COMPRISING THE STEPS OF APPLYING A FORCE TO SAID BILLET TO FORCE SAID BILLET DOWN A DIE CHANNEL CONFORMING TO THE BILLET IN CROSS-SECTION INTO A DIE CHAMBER INTO CONTACT WITH WALL SURFACES OF SAID CHAMBER AND THEREBY
Claim 2
Independent Claim
56 words
THE METHOD OF COLD-FORMING AN ARTICLE HAVING A SUBSTANTIAL LATERAL PROJECTION FROM A BILLET OF BAR OR TUBE, COMPRISING THE STEPS OF APPLYING A FORCE TO SAID BILLET TO FORCE SAID BILLET DOWN A DIE CHANNEL CONFORMING TO THE BILLET IN CROSS-SECTION INTO A DIE CHAMBER INTO CONTACT WITH WALL SURFACES OF SAID CHAMBER AND THEREBY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |