Patent US2452856A successfully refreshed from Google Patents.
US2452856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling device
Assignee: E E KOTKIN
•
Filing: 1945-06-08
•
Granted: 1948-11-02
•
Expires: 1965-06-08
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:50
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/38; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2027; Y10T83/444; Y10T83/4463; Y10T83/4465; Y10T83/525; Y10T83/541; Y10T83/544; Y10T83/566; Y10T83/5669; Y10T83/5742; Y10T83/5815; Y10T83/727; Y10T83/768; Y10T83/7755; Y10T83/7788
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |