Patent US2552743A successfully refreshed from Google Patents.
US2552743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer
Assignee: Individual
•
Filing: 1947-12-04
•
Granted: 1951-05-15
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Harold N Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:59
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/46; E02F3/58; E02F3/60; A; A01; A01K; A01K1/00; A01K1/01; A01K1/0132; E02F3/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US463353A
Cited
US731003A
Cited
US1030835A
Cited
US1087324A
Cited
US1166601A
Cited
US1192127A
Cited
US1441555A
Cited
US1699175A
Cited
GB399625A
Cited
US2303649A
Cited
US2391700A
Cited
US2369720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |