US2860228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier
Assignee: Individual
•
Filing: 1955-03-10
•
Granted: 1958-11-11
•
Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 John R Boyle
- 👤 Robert W T Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:08
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; Y; Y10; Y10S; Y10S261/00; Y10S261/15; Y10S261/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1815306A
Cited
US1821886A
Cited
US1839618A
Cited
US1963412A
Cited
US2125581A
Cited
US2379932A
Cited
US2497435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |