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Patent US1937104A successfully refreshed from Google Patents.
US1937104A
Expired / Lapsed
US
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Method of making pencils
Assignee: Joseph Dixon Crucible Co
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Filing: 1932-03-03
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Granted: 1933-11-28
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Expires: 1952-03-03
Abstract
No abstract record available.
Inventors
- 👤 Jorgen E Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
B; B43; B43K; B43K19/00; B43K19/16; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/25; B29C48/30; B29C48/305; B29C48/32; B29C48/34; B29C48/07; B29C48/08; B29C48/36; B29C48/475
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) | 1936-11-27 | 1937-05-29 | 1937-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-27 | 1941-05-29 | 1941-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-27 | 1945-05-29 | 1945-11-28 | $7700.00 | Window Closed / Lapsed |