US3398549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regulating at low temperatures
Assignee: United States Atomic Energy Commission
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Filing: 1967-02-03
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Granted: 1968-08-27
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Expires: 1987-02-03
Abstract
No abstract record available.
Inventors
- 👤 Zobel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C13/026; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2250/00; F17C2250/06; F17C2250/0605; F17C2250/0626; F17C2250/0631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |