US2489440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer
Assignee: NAYLOR BROTHERS Ltd
•
Filing: 1946-06-07
•
Granted: 1949-11-29
•
Expires: 1966-06-07
Abstract
No abstract record available.
Inventors
- 👤 Vallance Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/02; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE509122C
Cited
US773452A
Cited
US826312A
Cited
US1627354A
Cited
US1586686A
Cited
US1706905A
Cited
US1702314A
Cited
US1750425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |