US2347757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration
Assignee: Servel Inc
•
Filing: 1941-05-06
•
Granted: 1944-05-02
•
Expires: 1961-05-06
Abstract
No abstract record available.
Inventors
- 👤 Albert R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:59
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; F28C; F28C1/00; F28C1/02; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-02 | 1947-11-01 | 1948-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-02 | 1951-11-01 | 1952-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-02 | 1955-11-01 | 1956-05-02 | $7700.00 | Window Closed / Lapsed |