US2459770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer cover clamping and dustsealing means
Assignee: SCREW CONVEYOR CORP
•
Filing: 1945-09-06
•
Granted: 1949-01-18
•
Expires: 1965-09-06
Abstract
No abstract record available.
Inventors
- 👤 Edward P Escher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:59
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24; B65G2812/00; B65G2812/05; B65G2812/0505; B65G2812/0544; B65G2812/055; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US179163A
Cited
US372212A
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US748642A
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US731793A
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US1604855A
Cited
US1747471A
Cited
US2006657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |