US3393016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for conveying materials pneumatically and intermittently
Assignee: Lummus Industries Inc Co
•
Filing: 1966-10-17
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Granted: 1968-07-16
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Donald W Van Doorn
- 👤 Iii William C Pease
- 👤 Jack H Tinkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:04
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/66; D; D01; D01G; D01G23/00; D01G23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US539325A
Cited
US2754763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |