US2525853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air circulating device
Assignee: Individual
•
Filing: 1947-08-22
•
Granted: 1950-10-17
•
Expires: 1967-08-22
Abstract
No abstract record available.
Inventors
- 👤 Carl F Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/522; F04D29/526; F04D29/60; F04D29/64; F04D29/644; F04D29/646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1244480A
Cited
USRE20714E
Cited
US1713648A
Cited
US2029153A
Cited
US2050700A
Cited
US2144035A
Cited
US2326242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |