Patent US2506426A successfully refreshed from Google Patents.
US2506426A
Expired / Lapsed
US
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Drawing device
Assignee: Individual
•
Filing: 1946-12-26
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Granted: 1950-05-02
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Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Soren K B Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/04; B43L13/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US826425A
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US950696A
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US1080222A
Cited
US1091461A
Cited
US1273086A
Cited
US1422641A
Cited
US1679084A
Cited
US2370741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |