Patent US3415288A successfully refreshed from Google Patents.
US3415288A
Expired / Lapsed
US
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Heat insulated conduit and method of making same
Assignee: Califoam Corp of America
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Filing: 1966-12-27
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Granted: 1968-12-10
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Irving L Marshack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:03
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/029; F16L59/14; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706669A
Cited
GB821537A
Cited
US3061460A
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US3009601A
Cited
GB958966A
Cited
US3070476A
Cited
FR1329849A
Cited
GB955285A
Cited
US3170932A
Cited
US3257263A
Cited
US3318758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |