Patent US3328868A successfully refreshed from Google Patents.
US3328868A
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Method for manufacture of single or multicompartment pipes
Assignee: DRIAM SA
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Filing: 1963-11-04
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Granted: 1967-07-04
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Eckhardt Vilem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:48
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/08; B21C37/0803; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49391; Y10T29/49428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A METHOD FOR MANUFACTURING COMPARTMENTAL PIPES BY COLD DEFORMATION OF SECTIONAL ASSEMBLIES, EACH OF SAID ASSEMBLIES COMPRISING A MAIN SECTIONAL MEMBER HAVING A WEB PORTION AND LEG PORTIONS, EACH OF SAID ASSEMBLIES FURTHER COMPRISING AN AUXILIARY SECTIONAL MEMBER HAVING A WEB PORTION COMPLEMENTARY TO SAID FIRST-NAMED WEB PORTION AND LEG PORTIONS COMPLEMENTARY TO SAID FIRSTNAMED LEG PORTIONS, SAID METHOD COMPRISING: ASSEMBLING OF SAID AUXILIARY SECTIONAL MEMBER IN MUTUALLY ADJACENT RELATIONSHIP WITH SAID MAIN SECTIONAL MEMBER, SAID WEB PORTION AND SAID LEG PORTIONS OF SAID AUXILIARY SECTIONAL MEMBER BEIGN RESPECTIVELY JUXTAPOSED TO SAID WEB PORTION AND SAID LEG PORTIONS OF SAID MAIN SECTIONAL MEMBER, THE FREE TERMINAL EDGE PORTIONS OF SAID FIRST-NAMED AND SECOND-NAMED LEG PORTIONS BEING DISPOSED IN MUTUALLY JUXTAPOSED RELATIONSHIP,
Claim 2
Dependent Claim
122 words
IN A METHOD FOR MANUFACTURING COMPARTMENTAL PIPES BY COLD DEFORMATION OF SECTIONAL ASSEMBLIES, EACH OF SAID ASSEMBLIES COMPRISING A MAIN SECTIONAL MEMBER HAVING A WEB PORTION AND LEG PORTIONS, EACH OF SAID ASSEMBLIES FURTHER COMPRISING AN AUXILIARY SECTIONAL MEMBER HAVING A WEB PORTION COMPLEMENTARY TO SAID FIRST-NAMED WEB PORTION AND LEG PORTIONS COMPLEMENTARY TO SAID FIRSTNAMED LEG PORTIONS, SAID METHOD COMPRISING: ASSEMBLING OF SAID AUXILIARY SECTIONAL MEMBER IN MUTUALLY ADJACENT RELATIONSHIP WITH SAID MAIN SECTIONAL MEMBER, SAID WEB PORTION AND SAID LEG PORTIONS OF SAID AUXILIARY SECTIONAL MEMBER BEIGN RESPECTIVELY JUXTAPOSED TO SAID WEB PORTION AND SAID LEG PORTIONS OF SAID MAIN SECTIONAL MEMBER, THE FREE TERMINAL EDGE PORTIONS OF SAID FIRST-NAMED AND SECOND-NAMED LEG PORTIONS BEING DISPOSED IN MUTUALLY JUXTAPOSED RELATIONSHIP,
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |