US1894668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffer mechanism for car doors
Assignee: ACF Industries Inc
•
Filing: 1931-08-04
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Granted: 1933-01-17
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Expires: 1951-08-04
Abstract
No abstract record available.
Inventors
- 👤 Allen W Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:45
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/003; B61D19/005; Y; Y10; Y10S; Y10S16/00; Y10S16/20; Y10S70/00; Y10S70/67; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1053; Y10T292/1063; Y10T292/1064; Y10T292/1071; Y10T292/175; Y10T292/18
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) | 1936-01-17 | 1936-07-18 | 1937-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-01-17 | 1940-07-18 | 1941-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-01-17 | 1944-07-18 | 1945-01-17 | $7700.00 | Window Closed / Lapsed |