US654264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cooling and ventilating system.
Assignee: Individual
•
Filing: 1898-05-07
•
Granted: 1900-07-24
•
Expires: 1918-05-07
Abstract
No abstract record available.
Inventors
- 👤 Otto F Lueder
- 👤 Hugo C Alves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:56
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0046; F24F5/005; F24F2005/0057; Y; Y02; Y02B; Y02B10/00; Y02B10/40; Y02B30/00; Y02B30/54; Y10; Y10S; Y10S261/00; Y10S261/03
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) | 1903-07-24 | 1904-01-23 | 1904-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-07-24 | 1908-01-23 | 1908-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-07-24 | 1912-01-23 | 1912-07-24 | $7700.00 | Window Closed / Lapsed |