US2764341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower assembly
Assignee: Lennox Industries Inc
•
Filing: 1953-04-13
•
Granted: 1956-09-25
•
Expires: 1973-04-13
Abstract
No abstract record available.
Inventors
- 👤 John R Greiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866098A
Cited
US1994582A
Cited
US2287462A
Cited
US2450647A
Cited
US2448500A
Cited
US2638389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |