US2549547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidity control system
Assignee: Individual
•
Filing: 1945-07-06
•
Granted: 1951-04-17
•
Expires: 1965-07-06
Abstract
No abstract record available.
Inventors
- 👤 Trask Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:46
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1405; F24F3/153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1950344A
Cited
US2019091A
Cited
US2133039A
Cited
US2188526A
Cited
US2290426A
Cited
US2200215A
Cited
US2200302A
Cited
US2268769A
Cited
US2336735A
Cited
US2471692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |