US3473341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-gas refrigeration apparatus
Assignee: US Philips Corp
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Filing: 1967-12-27
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Granted: 1969-10-21
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Expires: 1987-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jan Mulder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0275; F25J1/0276; F16; F16L; F16L59/00; F16L59/14; F16L59/141; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25B; F25B9/00; F25B9/14; F25J2290/00; F25J2290/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3101596A
Cited
US3299646A
Cited
US3260055A
Cited
US3383871A
Cited
US3396547A
Cited
US3368360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |