US2962873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system
Assignee: Polar Bear Inc Japan
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Filing: 1959-03-30
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Granted: 1960-12-06
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 John L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:20
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3222; F; F25; F25B; F25B2327/00
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |