US3430455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal switch for cryogenic apparatus
Assignee: 500 Inc
•
Filing: 1967-04-17
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Granted: 1969-03-04
•
Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 Robert W Stuart
- 👤 Walter H Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:08
CPC Classifications
F; F17; F17C; F17C13/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0119; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2250/00; F17C2250/06; F17C2250/0605; F17C2250/0636; F25; F25D; F25D19/00; F25D19/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3004394A
Cited
US3045980A
Cited
US3209818A
Cited
US3225820A
Cited
US3177933A
Cited
US3229755A
Cited
US3302703A
Cited
US3296825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |