US2979355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door brake
Assignee: Individual
•
Filing: 1958-04-18
•
Granted: 1961-04-11
•
Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Vergil K Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:47
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/10; E05D11/1028; E05D11/1078; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0876; Y10T292/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |