Patent US3504444A successfully refreshed from Google Patents.
US3504444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air circulation arrangement for dryers
Assignee: Fedders Corp
•
Filing: 1968-03-25
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Granted: 1970-04-07
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Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 James K Nelson
- 👤 Terry J Laue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:43
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1072189A
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US1377300A
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US2486058A
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US2503329A
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US2608769A
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US2587646A
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US2798307A
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US2818659A
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US3114653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |