Patent US2521730A successfully refreshed from Google Patents.
Patent US3160443A successfully refreshed from Google Patents.
US3160443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pneumatically conveying articles
Assignee: AT&T Inc
•
Filing: 1962-10-23
•
Granted: 1964-12-08
•
Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Richard A Harris
- 👤 Jr William R Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:24
CPC Classifications
B; B65; B65G; B65G51/00; B65G51/02; B65G51/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN A PENUMATIC CONVEYOR FOR ADVANCING ARTICLES ALONG A PATH, OPPOSITELY DISPOSED PAIRS OF NOZZLES POSITIONED ALONG THE PATH AT ACUTE ANGLES WITH RESPECT TO SAID PATH, AND MEANS FOR APPLYING AIR PULSES TO SAID NOZZLES TO ADVANCE ARTICLES POSITIONED BETWEEN THE PAIRS OF NOZZLES.
Claim 2
Dependent Claim
45 words
IN A PENUMATIC CONVEYOR FOR ADVANCING ARTICLES ALONG A PATH, OPPOSITELY DISPOSED PAIRS OF NOZZLES POSITIONED ALONG THE PATH AT ACUTE ANGLES WITH RESPECT TO SAID PATH, AND MEANS FOR APPLYING AIR PULSES TO SAID NOZZLES TO ADVANCE ARTICLES POSITIONED BETWEEN THE PAIRS OF NOZZLES.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |