Patent US4680782A successfully refreshed from Google Patents.
Patent US3541871A successfully refreshed from Google Patents.
US3541871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal-type hub
Assignee: Individual
•
Filing: 1969-03-14
•
Granted: 1970-11-24
•
Expires: 1989-03-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Burrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:50
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0847; F16D1/0894; F16D1/09; F16D1/093; F16D1/095; F16D2001/0955; F16D1/10; F16D2001/103; Y; Y10; Y10S; Y10S474/00; Y10S474/902; Y10T; Y10T403/00; Y10T403/70; Y10T403/7026; Y10T403/7041; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19921; Y10T74/19926
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) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |