Patent US2741732A successfully refreshed from Google Patents.
US2154252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engraving or routing machine
Assignee: SHILKOFF
•
Filing: 1936-08-04
•
Granted: 1939-04-11
•
Expires: 1956-08-04
Abstract
No abstract record available.
Inventors
- 👤 Shikoff Jacob
- 👤 Clarence P Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/02; B41C1/04; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/301792; Y10T409/301904; Y10T409/30196; Y10T409/302464
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-04-10 | 1942-10-10 | 1943-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-10 | 1946-10-10 | 1947-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-10 | 1950-10-10 | 1951-04-11 | $7700.00 | Window Closed / Lapsed |