US2966253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed drive control for material handling
Assignee: Individual
•
Filing: 1955-09-19
•
Granted: 1960-12-27
•
Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 William A Gerrans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:29
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/06; G05D7/0605; G05D7/0611; B; B65; B65G; B65G47/00; B65G2811/00; B65G2811/06; B65G2811/0673; B65G2811/0689
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1851215A
Cited
US1945652A
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US2103400A
Cited
US2221396A
Cited
US2449779A
Cited
US2656845A
Cited
US2609965A
Cited
GB703492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |