Patent US1723901A successfully refreshed from Google Patents.
US1723901A
Expired / Lapsed
US
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Lock differential gearing
Assignee: Individual
•
Filing: 1928-12-26
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Granted: 1929-08-06
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Expires: 1948-12-26
Abstract
No abstract record available.
Inventors
- 👤 Norman L Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:49
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/295; F16H48/06; F16H48/08; F16H48/24; F16H48/30; F16H2048/082; F16H2048/305; F16H48/38; F16H2048/385; F16H48/40; F16H2048/405; F16H48/42
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) | 1932-08-05 | 1933-02-04 | 1933-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-08-05 | 1937-02-04 | 1937-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-08-05 | 1941-02-04 | 1941-08-06 | $7700.00 | Window Closed / Lapsed |