US3523175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier
Assignee: ERNEST F GYGAX
•
Filing: 1968-05-27
•
Granted: 1970-08-04
•
Expires: 1988-05-27
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Gygax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
G; G05; G05D; G05D22/00; G05D22/02; F; F24; F24F; F24F6/00; F24F6/02; F24F6/025; F24H; F24H1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733693A
Cited
US2287376A
Cited
US2328538A
Cited
US2347490A
Cited
US2804067A
Cited
US2810381A
Cited
US2883511A
Cited
US3209125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |