Patent US2431648A successfully refreshed from Google Patents.
US2431648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Individual
•
Filing: 1945-02-09
•
Granted: 1947-11-25
•
Expires: 1965-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert A Mayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:07
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; F04D29/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1062006A
Cited
US1333294A
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US1637652A
Cited
US1876871A
Cited
US1876518A
Cited
US2157441A
Cited
US2240238A
Cited
US2231063A
Cited
US2293512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |