US2872248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic conveyor for planting implement
Assignee: Individual
•
Filing: 1953-06-25
•
Granted: 1959-02-03
•
Expires: 1973-06-25
Abstract
No abstract record available.
Inventors
- 👤 Georgia W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:59
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US36291A
Cited
US66600A
Cited
US144918A
Cited
US186800A
Cited
US203529A
Cited
US263248A
Cited
US441810A
Cited
US534403A
Cited
US1173073A
Cited
US1446605A
Cited
US1282697A
Cited
US1407795A
Cited
US1810671A
Cited
US1897421A
Cited
US2031713A
Cited
US2120003A
Cited
US2633390A
Cited
US2729157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |