US2813474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High velocity air distribution apparatus
Assignee: Anemostat Corp of America
•
Filing: 1953-08-04
•
Granted: 1957-11-19
•
Expires: 1973-08-04
Abstract
No abstract record available.
Inventors
- 👤 Franz J Kurth
- 👤 Honerkamp Friedrich
- 👤 Leonard R Phillips
- 👤 William J Waeldner
- 👤 Wood Carl Olen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/16; F24F1/00; F24F1/01; F24F13/02; F24F13/04; F24F13/24; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0522; G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/138; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |