US1931692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal blowing apparatus
Assignee: Elliott Co
•
Filing: 1930-02-15
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Granted: 1933-10-24
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Expires: 1950-02-15
Abstract
No abstract record available.
Inventors
- 👤 Paul E Good
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:50
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4213; F04D29/02; F04D29/023; F04D29/26; F04D29/28; F04D29/284; F04D29/285; F04D29/44; F04D29/441; F04D29/444; F04D29/60; F04D29/62; F04D29/624; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51; F05D2250/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-10-23 | 1937-04-24 | 1937-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-23 | 1941-04-24 | 1941-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-23 | 1945-04-24 | 1945-10-24 | $7700.00 | Window Closed / Lapsed |