US2596687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier head
Assignee: Individual
•
Filing: 1948-10-26
•
Granted: 1952-05-13
•
Expires: 1968-10-26
Abstract
No abstract record available.
Inventors
- 👤 Hill Hugh Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:59
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; B; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/12; B05B7/1254; B05B7/1263; B05B7/1272; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/794; Y10T137/7976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790804A
Cited
US1753165A
Cited
US1709064A
Cited
US1982137A
Cited
US2335935A
Cited
US2442801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |