Patent US2711285A successfully refreshed from Google Patents.
US2711285A
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Blower
Assignee: Lau Blower Co
•
Filing: 1949-12-14
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Granted: 1955-06-21
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Expires: 1969-12-14
Abstract
No abstract record available.
Inventors
- 👤 John B Burrowes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:36
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/626; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226; F04D29/424
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US935114A
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US1017215A
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US1163543A
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US1650873A
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US1809603A
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US2176324A
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US2087160A
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US2375920A
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US2316608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |