Patent US2688459A successfully refreshed from Google Patents.
US2688459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Averaging system
Assignee: Exact Weight Scale Co
•
Filing: 1951-03-29
•
Granted: 1954-09-07
•
Expires: 1971-03-29
Abstract
No abstract record available.
Inventors
- 👤 Roger L Merrill
- 👤 Hecox William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
G; G01; G01G; G01G15/00; G07; G07C; G07C3/00; G07C3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2491335A
Cited
US1089680A
Cited
US1921317A
Cited
US2258859A
Cited
US2349437A
Cited
US2532010A
Cited
GB587210A
Cited
US2477395A
Cited
GB601393A
Cited
US2537498A
Cited
US2503295A
Cited
US2514054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |