US2442117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing apparatus
Assignee: Individual
•
Filing: 1945-09-21
•
Granted: 1948-05-25
•
Expires: 1965-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE27646C
Cited
US1140143A
Cited
US1807075A
Cited
US1826338A
Cited
US1993456A
Cited
US1986625A
Cited
US2171587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-25 | 1951-11-24 | 1952-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-25 | 1955-11-24 | 1956-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-25 | 1959-11-24 | 1960-05-25 | $7700.00 | Window Closed / Lapsed |