US2500478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed governor
Assignee: Individual
•
Filing: 1943-04-15
•
Granted: 1950-03-14
•
Expires: 1963-04-15
Abstract
No abstract record available.
Inventors
- 👤 Henry E Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:58
CPC Classifications
G; G05; G05D; G05D13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US261980A
Cited
US131161A
Cited
US663599A
Cited
US931707A
Cited
US1130659A
Cited
FR445302A
Cited
US1222984A
Cited
US1507356A
Cited
US1530740A
Cited
US1509695A
Cited
US1814631A
Cited
US1813222A
Cited
US2247989A
Cited
US2384340A
Cited
US2256963A
Cited
US2341384A
Cited
US2358894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |