US3534985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable joint for two coaxial,corrugated pipes
Assignee: KM Kabelmetal AG
•
Filing: 1969-04-01
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Granted: 1970-10-20
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Expires: 1989-04-01
Abstract
No abstract record available.
Inventors
- 👤 Hubert Kuypers
- 👤 Friedrich Schatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:03
CPC Classifications
F; F16; F16L; F16L39/00; F16L23/00; F16L23/02; F16L23/024; F16L23/028; F16L23/0286; F16L33/00; F16L33/26; F16L59/00; F16L59/14; F16L59/16; F16L59/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315784A
Cited
CA536264A
Cited
US2309719A
Cited
US2848254A
Cited
US3058861A
Cited
US3377464A
Cited
US3393267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |