US3474720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conditioning air
Assignee: Modine Manufacturing Co
•
Filing: 1968-03-01
•
Granted: 1969-10-28
•
Expires: 1988-03-01
Abstract
No abstract record available.
Inventors
- 👤 Ray W Qualley
- 👤 Everett L Sartain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:42
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/246; F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24F7/065; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2532737A
Cited
US3246643A
Cited
US3348922A
Cited
US3383179A
Cited
US3307469A
Cited
US3404618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |