US2984464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifying apparatus
Assignee: Individual
•
Filing: 1957-05-20
•
Granted: 1961-05-16
•
Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Paul A Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:04
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; F24F6/16; Y; Y10; Y10S; Y10S261/00; Y10S261/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2047025A
Cited
US2022415A
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GB445889A
Cited
US2030454A
Cited
US2114780A
Cited
GB483876A
Cited
US2189021A
Cited
US2607571A
Cited
US2591057A
Cited
US2766027A
Cited
CH317049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |