Patent US3454732A successfully refreshed from Google Patents.
US3454732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity control apparatus
Assignee: Robertshaw US Holding Corp
•
Filing: 1967-04-19
•
Granted: 1969-07-08
•
Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 John Liebermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:10
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/88; F24F11/89; H; H01; H01H; H01H35/00; H01H35/42; F24F11/30; F24F2110/00; F24F2110/10; F24F2110/12; F24F2110/20; F24F2110/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |