US1835686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic power door-operating installation
Assignee: Stone J and Co Ltd
•
Filing: 1931-05-04
•
Granted: 1931-12-08
•
Expires: 1951-05-04
Abstract
No abstract record available.
Inventors
- 👤 Allan John Edward
- 👤 Freeman Sterry Baines
- 👤 Watkins William Pritchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/57; E05F15/56; E05F15/60; E05F15/603; E05F15/632; E05F15/635; E05F15/665; E05F15/668; E05F15/67; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/214; E05Y2201/216; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2900/00; E05Y2900/50; E05Y2900/514
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-12-07 | 1935-06-08 | 1935-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-07 | 1939-06-08 | 1939-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-07 | 1943-06-08 | 1943-12-08 | $7700.00 | Window Closed / Lapsed |