US3497453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for protection of power humidifier
Assignee: Individual
•
Filing: 1967-07-25
•
Granted: 1970-02-24
•
Expires: 1987-07-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred Yurdin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:39
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24F6/06; Y; Y10; Y10S; Y10S261/00; Y10S261/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126427A
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US2319565A
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US2631021A
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US3043772A
Cited
US3173864A
Cited
GB967086A
Cited
US3228665A
Cited
US3191915A
Cited
US3412021A
Cited
US3332871A
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 |