Patent US4481020A successfully refreshed from Google Patents.
US2856743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveying system
Assignee: Individual
•
Filing: 1954-10-04
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Granted: 1958-10-21
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Schickedanz Gustav
- 👤 Reinicke Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:21
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/137; B65G1/1373; B65G1/1376
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071771A
Cited
US1711647A
Cited
US2061490A
Cited
US2408838A
Cited
US2584628A
Cited
US2642010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |