US2842306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine driven multi-stage blower or pump
Assignee: Individual
•
Filing: 1953-04-20
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Granted: 1958-07-08
•
Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred Buchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:59
CPC Classifications
A; A47; A47B; A47B96/00; A47B96/14; A47B96/1408; F; F01; F01D; F01D1/00; F01D1/24; F02; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; F05; F05D; F05D2250/00; F05D2250/10; F05D2250/19; F05D2250/191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |