US2569019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contour marker and layout tool
Assignee: Individual
•
Filing: 1945-04-21
•
Granted: 1951-09-25
•
Expires: 1965-04-21
Abstract
No abstract record available.
Inventors
- 👤 Leroy E Ridgeway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US276688A
Cited
US605763A
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US2095479A
Cited
US742077A
Cited
US1660616A
Cited
US1922409A
Cited
US1991117A
Cited
US2257291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |