Patent US1825449A successfully refreshed from Google Patents.
US1825449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
haller
Assignee: —
•
Filing: —
•
Granted: 1931-09-29
•
Expires: 1948-09-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:58
CPC Classifications
F; F03; F03D; F03D80/00; F04; F04B; F04B47/00; F04B47/12; F16; F16C; F16C7/00; F16C7/04; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32975; Y10T403/32983; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2144
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) | 1934-09-28 | 1935-03-30 | 1935-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-28 | 1939-03-30 | 1939-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-28 | 1943-03-30 | 1943-09-29 | $7700.00 | Window Closed / Lapsed |