Patent US5168214A successfully refreshed from Google Patents.
Patent US2317424A successfully refreshed from Google Patents.
US2317424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for perforating sheet material
Assignee: Individual
•
Filing: 1942-03-12
•
Granted: 1943-04-27
•
Expires: 1962-03-12
Abstract
No abstract record available.
Inventors
- 👤 George F Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49762; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/2209; Y10T83/2213; Y10T83/748; Y10T83/7587; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8776; Y10T83/8821; Y10T83/8828; Y10T83/8841; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9457; Y10T83/9473; Y10T83/9483; Y10T83/9486
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) | 1946-04-26 | 1946-10-26 | 1947-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-26 | 1950-10-26 | 1951-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-26 | 1954-10-26 | 1955-04-27 | $7700.00 | Window Closed / Lapsed |