US1597588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating and cooling system
Assignee: Individual
•
Filing: 1924-07-15
•
Granted: 1926-08-24
•
Expires: 1944-07-15
Abstract
No abstract record available.
Inventors
- 👤 Earl L Fairbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:41
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007
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) | 1929-08-23 | 1930-02-22 | 1930-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-23 | 1934-02-22 | 1934-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-23 | 1938-02-22 | 1938-08-24 | $7700.00 | Window Closed / Lapsed |