Patent US4728712A successfully refreshed from Google Patents.
Patent US2778245A successfully refreshed from Google Patents.
US2778245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential transmission
Assignee: B L DIAMOND
•
Filing: 1951-08-31
•
Granted: 1957-01-22
•
Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ray F Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/24; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1193709A
Cited
US1209007A
Cited
US1481889A
Cited
US1460064A
Cited
US1324859A
Cited
US1344107A
Cited
US1355297A
Cited
US1494457A
Cited
US1641190A
Cited
US1750981A
Cited
US1786492A
Cited
US1883725A
Cited
US2148481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |