US1663428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffer mechanism for car doors
Assignee: Individual
•
Filing: 1925-07-08
•
Granted: 1928-03-20
•
Expires: 1945-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Viberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:33
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/003; B61D19/005; E; E05; E05F; E05F5/00; E05F5/003; Y; Y10; Y10S; Y10S16/00; Y10S16/20; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1063; Y10T292/1064; Y10T292/1067; Y10T292/1071
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) | 1931-03-20 | 1931-09-19 | 1932-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-03-20 | 1935-09-19 | 1936-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-03-20 | 1939-09-19 | 1940-03-20 | $7700.00 | Window Closed / Lapsed |