Patent US2661091A successfully refreshed from Google Patents.
US2661091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for weight classification
Assignee: EIDP Inc
•
Filing: 1951-01-24
•
Granted: 1953-12-01
•
Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 Norvin G Maloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/16; B07C5/18; B07C5/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1735089A
Cited
US1656210A
Cited
US2067744A
Cited
US2112823A
Cited
US2307695A
Cited
US2311722A
Cited
US2305020A
Cited
US2489899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |