USRE27944E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving sidewalk
Assignee: —
•
Filing: 1971-04-26
•
Granted: 1974-03-26
•
Expires: 1991-04-26
Abstract
Abstract THIS INVENTION RELATES TO MOVING SIDEWALKS AND ENTRY AND PARTICULARLY TO SUCH SIDEWALKS, AS ARE EQUIPPED WITH WHEREBY A MESH BELT IS CONSTRUCTED TO VARY IN WIDTH MAY BE MOVES SO THAT THE SPEED OF THE BELT AT ONE LOCUS MAY BE SUBSTANTIALLY MORE THAT WALKING SPEED, WHILE BEING OF THE ORDER TO MAGNITUDE OF WALKING SPEED AT A SECOND LOCUS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:28
CPC Classifications
A; A63; A63G; A63G31/00; A63G31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |