US2355472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor
Assignee: Individual
•
Filing: 1940-10-04
•
Granted: 1944-08-08
•
Expires: 1960-10-04
Abstract
No abstract record available.
Inventors
- 👤 Edward J Ruthman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/58; F04D29/586; F04D7/00; F04D7/02; F04D7/06; F04D7/065; H; H02; H02K; H02K9/00; H02K9/19
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) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |