Patent US1940451A successfully refreshed from Google Patents.
US1940451A
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US
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Assignee: E FREDERICS Inc
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Filing: 1930-02-19
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Granted: 1933-12-19
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Expires: 1950-02-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Frederics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:59
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/24; A45D2/34
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) | 1936-12-18 | 1937-06-19 | 1937-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-18 | 1941-06-19 | 1941-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-18 | 1945-06-19 | 1945-12-19 | $7700.00 | Window Closed / Lapsed |