US3483709A
Expired / Lapsed
US
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Low temperature system
Assignee: Princeton Gamma Tech Inc
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Filing: 1967-07-21
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Granted: 1969-12-16
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Expires: 1987-07-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Baicker
- 👤 Alden R Sayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:16
CPC Classifications
F; F25; F25B; F25B19/00; F25B19/005; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25D; F25D19/00; F25D19/006; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/192; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/032; F17C2203/00; F17C2203/03; F17C2203/0391; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/018; F17C2205/03; F17C2205/0302; F17C2205/0352; F17C2205/0361; F17C2221/00; F17C2221/01; F17C2221/014; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2227/00; F17C2227/03; F17C2227/0337; F17C2270/00; F17C2270/05; F17C2270/0518
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) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |