US3473575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally insulated pipe
Assignee: KM Kabelmetal AG
•
Filing: 1967-05-31
•
Granted: 1969-10-21
•
Expires: 1987-05-31
Abstract
No abstract record available.
Inventors
- 👤 Herbert Vogelsang
- 👤 Joseph Goepfert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:52
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/12; F16L59/125; F16L59/14; F16L59/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2937662A
Cited
US3332446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |