US3475009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic barricade
Assignee: ELVIS B BROWN
•
Filing: 1968-10-30
•
Granted: 1969-10-28
•
Expires: 1988-10-30
Abstract
No abstract record available.
Inventors
- 👤 Elvis B Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:04
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/02; Y; Y10; Y10S; Y10S52/00; Y10S52/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1777719A
Cited
US1776253A
Cited
US2235283A
Cited
US2177467A
Cited
US2610502A
Cited
US2654168A
Cited
US3298121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |