US3372793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory conveyor systems
Assignee: National Research Development Corp UK
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Filing: 1966-09-14
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Granted: 1968-03-12
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Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Redford Alan Harry
- 👤 Boothroyd Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:20
CPC Classifications
B; B65; B65G; B65G27/00; B65G27/10; B65G27/16; B65G2812/00; B65G2812/03; B65G2812/0304; B65G2812/0308
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |