US2019351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus
Assignee: General Electric Co
•
Filing: 1934-11-17
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Granted: 1935-10-29
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Expires: 1954-11-17
Abstract
No abstract record available.
Inventors
- 👤 Harold F Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0025; F24; F24F; F24F12/00; F24F12/001; Y; Y02; Y02B; Y02B30/00; Y02B30/56; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/399; Y10S165/909
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) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |