US3421336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intransit liquefied gas refrigeration system
Assignee: Enviri Corp
•
Filing: 1967-06-05
•
Granted: 1969-01-14
•
Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 Horst W Lichtenberger
- 👤 David P Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:47
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3202; F; F25; F25D; F25D3/00; F25D3/10; F25D3/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2479840A
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US2951348A
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US3121999A
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US3271970A
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US3241329A
Cited
US3255597A
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US3287925A
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US3281075A
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US3316726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |