US3493237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing insert for socket pipes
Assignee: Deutsche Steinzeug und Kunststoffwarenfabrik
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Filing: 1967-12-21
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Granted: 1970-02-03
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Expires: 1987-12-21
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Bernhard Kleindienst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:27
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; F16L13/113; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/025; F16L13/116; F16L17/00; F16L17/02; F16L17/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1856581A
Cited
US1856890A
Cited
US2451070A
Cited
US2501943A
Cited
DE1055460B
Cited
US2955322A
Cited
US3064983A
Cited
US3135519A
Cited
US3150876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |