US2555044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential mechanism
Assignee: Individual
•
Filing: 1948-09-01
•
Granted: 1951-05-29
•
Expires: 1968-09-01
Abstract
No abstract record available.
Inventors
- 👤 Frank M Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:02
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/12; F16H48/14; F16H48/142; F16D; F16D41/00; F16D41/22; F16H48/20; F16H48/24; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1286362A
Cited
US1301800A
Cited
US1430744A
Cited
US2231968A
Cited
US2329059A
Cited
US2397673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |