US2760503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral conveyors
Assignee: Carrier Conveyor Corporation
•
Filing: 1952-06-21
•
Granted: 1956-08-28
•
Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert M Carrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:16
CPC Classifications
B; B65; B65G; B65G27/00; B65G27/10; B65G27/16; B65G27/26; B01; B01J; B01J19/00; B01J19/28; B01J19/285; C; C22; C22B; C22B3/00; C22B3/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US429147A
Cited
US1061141A
Cited
DE394460C
Cited
GB647150A
Cited
US2374664A
Cited
US2464216A
Cited
US2618577A
Cited
US2662951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |