US3004637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yielding connection for identical flanged channel-like profile members in overlapping engagement
Assignee: Bochumer Eisenhuette Heintzmann GmbH and Co KG
•
Filing: 1957-02-27
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Granted: 1961-10-17
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Heintzmann Hans Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:49
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/14; E21D11/18; E21D11/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US394462A
Cited
US978655A
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US1836949A
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US2040374A
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FR895749A
Cited
US2649126A
Cited
GB725305A
Cited
US2867303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |