Patent US2784871A successfully refreshed from Google Patents.
US2784871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Empty signal for columnar merchandising machines
Assignee: Rowe Manufacturing Co Inc
•
Filing: 1952-06-07
•
Granted: 1957-03-12
•
Expires: 1972-06-07
Abstract
No abstract record available.
Inventors
- 👤 Gabrielsen Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
G; G07; G07F; G07F9/00; G07F9/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US839304A
Cited
US1356345A
Cited
US1209758A
Cited
US1393964A
Cited
US1506813A
Cited
US1639615A
Cited
US1788523A
Cited
US1803146A
Cited
US2231952A
Cited
US2211799A
Cited
US2281487A
Cited
US2610100A
Cited
US2546690A
Cited
US2650149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |