US1627728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency-door apparatus for vehicles
Assignee: National Pneumatic Co Inc
•
Filing: 1925-04-18
•
Granted: 1927-05-10
•
Expires: 1945-04-18
Abstract
No abstract record available.
Inventors
- 👤 Roscoe D Conklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:11
CPC Classifications
B; B60; B60J; B60J9/00; B60J9/02; Y; Y10; Y10S; Y10S292/00; Y10S292/65; Y10T; Y10T292/00; Y10T292/08; Y10T292/0908; Y10T292/096; Y10T292/0969; Y10T292/097
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) | 1930-05-09 | 1930-11-08 | 1931-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-09 | 1934-11-08 | 1935-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-09 | 1938-11-08 | 1939-05-10 | $7700.00 | Window Closed / Lapsed |