US3497187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-rotated power humidifier
Assignee: ROY P SKERRITT
•
Filing: 1968-05-14
•
Granted: 1970-02-24
•
Expires: 1988-05-14
Abstract
No abstract record available.
Inventors
- 👤 Roy P Skerritt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
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)
US1074037A
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US2225954A
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US2271342A
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US2516103A
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US2580826A
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US3105860A
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US3157351A
Cited
US3212492A
Cited
US3318587A
Cited
US3274992A
Cited
US3298676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |