US1506892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump or blower
Assignee: Individual
•
Filing: 1922-12-13
•
Granted: 1924-09-02
•
Expires: 1942-12-13
Abstract
No abstract record available.
Inventors
- 👤 Egersdorfer Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2042; F04B1/2035; F04B1/22; F04B1/26; F04B1/30; F04B1/32; F04B1/324; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86115; Y10T137/86123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-09-02 | 1928-03-03 | 1928-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-09-02 | 1932-03-03 | 1932-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-09-02 | 1936-03-03 | 1936-09-02 | $7700.00 | Window Closed / Lapsed |