US1894470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Date indicating calendar
Assignee: ANNA RUEGER
•
Filing: 1931-08-11
•
Granted: 1933-01-17
•
Expires: 1951-08-11
Abstract
No abstract record available.
Inventors
- 👤 Harry M Mathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:07
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/24; G04B19/241; G04B19/243; G04B19/247; G04B19/253; G04B19/25333; G04B19/25353
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1936-01-17 | 1936-07-18 | 1937-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-01-17 | 1940-07-18 | 1941-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-01-17 | 1944-07-18 | 1945-01-17 | $7700.00 | Window Closed / Lapsed |