US3528494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat pipe for low thermal conductivity working fluids
Assignee: Teledyne Inc
•
Filing: 1966-11-07
•
Granted: 1970-09-15
•
Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 William J Levedahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:13
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/04; F28D15/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3402767A
Cited
US3305005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |