Patent US2505378A successfully refreshed from Google Patents.
US2505378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner for hair driers and the like
Assignee: HEAT GENERATING SYSTEMS Inc
•
Filing: 1946-06-20
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Granted: 1950-04-25
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Expires: 1966-06-20
Abstract
No abstract record available.
Inventors
- 👤 Robert C Belgau
- 👤 Awarua P Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:09
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/44; A45D20/46; F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1429856A
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US1920914A
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US1986814A
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US2127121A
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US2052931A
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US2101555A
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US2066847A
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US2181672A
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US2201688A
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US2190168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |