US2490315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting apparatus
Assignee: ENGINEERING Manufacturing CO
•
Filing: 1944-09-25
•
Granted: 1949-12-06
•
Expires: 1964-09-25
Abstract
No abstract record available.
Inventors
- 👤 Murphy William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/04; B43L13/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US195915A
Cited
US647677A
Cited
US1242467A
Cited
GB231615A
Cited
US2174137A
Cited
US2256241A
Cited
US2275251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |