US2440674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine drive
Assignee: Individual
•
Filing: 1944-01-15
•
Granted: 1948-05-04
•
Expires: 1964-01-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/08; F16H25/12; F01; F01B; F01B3/00; F01B3/04; F01B3/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312; Y10T74/1832
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US701A
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US322679A
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SE18100C1
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US1701173A
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GB190601276A
Cited
US1384344A
Cited
FR678660A
Cited
US1876506A
Cited
DE687918C
Cited
US2196216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |