Patent US1920361A successfully refreshed from Google Patents.
US1920361A
Expired / Lapsed
US
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Pencil and method of finishing same
Assignee: Joseph Dixon Crucible Co
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Filing: 1932-05-18
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Granted: 1933-08-01
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Expires: 1952-05-18
Abstract
No abstract record available.
Inventors
- 👤 Daneke William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:08
CPC Classifications
B; B43; B43K; B43K19/00; B43K19/16; B43K19/18; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
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) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |