US2458041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor
Assignee: UTILLITY APPLIANCE CORP
•
Filing: 1945-07-14
•
Granted: 1949-01-04
•
Expires: 1965-07-14
Abstract
No abstract record available.
Inventors
- 👤 John H Wessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:35
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; F04D29/283; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1700017A
Cited
US1036627A
Cited
US1712527A
Cited
US1890226A
Cited
US2115367A
Cited
US2335091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |