US3015220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically refrigerated railway car
Assignee: Individual
•
Filing: 1955-11-25
•
Granted: 1962-01-02
•
Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Thore M Elfving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
F; F25; F25D; F25D19/00; F25D19/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2073677A
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US2099747A
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US2106515A
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US2311622A
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US2343147A
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US2450478A
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US2561305A
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US2586893A
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US2696086A
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US2630688A
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US2668421A
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US2793834A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |