Patent US1429370A successfully refreshed from Google Patents.
Patent US1894886A successfully refreshed from Google Patents.
US1894886A
Expired / Lapsed
US
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Mathematical instrument
Assignee: Individual
•
Filing: 1929-10-24
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Granted: 1933-01-17
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Expires: 1949-10-24
Abstract
No abstract record available.
Inventors
- 👤 Paskowski Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:47
CPC Classifications
G; G01; G01C; G01C1/00; B; B25; B25H; B25H7/00; B25H7/04; B43; B43L; B43L13/00; B43L13/001; B43L13/002; B43L13/02; B43L13/028; B43L7/00; B43L7/10; B43L7/12; B43L7/14
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) | 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 |