Hollow draft inducers (draft inducers or hollow inducers)
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United States of America Patent
Stats
-
Mar 1, 2016
Grant Date -
N/A
app pub date -
Apr 27, 2013
filing date -
Jun 28, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Draft inducers (50,40) having hollow axis (73a,73b), folding impellers (37a) or retractable propellers (37b) having limited presence in the flue path, external motor (47a, 47b) with sensors (33a, 33b), male connection (63a, 63b) and female connection (65a, 65b) ends for connecting with flue stack and other tandem modules.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- F24H Class
- 262 Applications Filed
- 223 Patents Issued To-Date
- 85.12 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F24H Class
- 19.47 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 1, 2027 |