Patent USRE22053E successfully refreshed from Google Patents.
US3476409A
Expired / Lapsed
US
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Pipe union
Assignee: Benteler Deutschland GmbH
•
Filing: 1968-06-13
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Granted: 1969-11-04
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Expires: 1988-06-13
Abstract
No abstract record available.
Inventors
- 👤 Erich Benteler
- 👤 Wilhelm Schmidt
- 👤 Willi Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:24
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/006; F16L15/008; F16L15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US278800A
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US581050A
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GB343781A
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US2287142A
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GB545972A
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GB949289A
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US3268240A
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US3266821A
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US3241867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |