US3250206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust structure
Assignee: Lau Blower Co
•
Filing: 1963-09-03
•
Granted: 1966-05-10
•
Expires: 1983-09-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Strouth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:01
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1406; F24F13/1426; F24F2013/148; Y; Y10; Y10S; Y10S454/00; Y10S454/904; Y10S454/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2739521A
Cited
US2741972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |