US2310838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper cutter
Assignee: Individual
•
Filing: 1941-12-22
•
Granted: 1943-02-09
•
Expires: 1961-12-22
Abstract
No abstract record available.
Inventors
- 👤 David T Helprin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:20
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/04; B26D1/06; B26D1/10; B26D1/105; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7593; Y10T83/76; Y10T83/7607; Y10T83/7627; Y10T83/768; Y10T83/7684; Y10T83/7693; Y10T83/869; Y10T83/8776; Y10T83/8785; Y10T83/8821; Y10T83/8822; Y10T83/929; Y10T83/9411; Y10T83/9418; Y10T83/9423
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) | 1946-02-08 | 1946-08-10 | 1947-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-02-08 | 1950-08-10 | 1951-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-02-08 | 1954-08-10 | 1955-02-09 | $7700.00 | Window Closed / Lapsed |