US2758822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air tempering and distributing units
Assignee: Luwa Ltd
•
Filing: 1953-09-25
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Granted: 1956-08-14
•
Expires: 1973-09-25
Abstract
No abstract record available.
Inventors
- 👤 Sauter Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:55
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0246; F24; F24D; F24D1/00; F24D3/00; F24D3/02; F24D5/00; F24F; F24F1/00; F24F1/01; F24F13/00; F24F13/26; F24F3/00; F24F3/02; F24F3/04; F28D1/0233; F28D1/024; F28D1/04; F28D1/047; F28D1/0477; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/30
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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |