US2507640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear system
Assignee: Individual
•
Filing: 1948-05-04
•
Granted: 1950-05-16
•
Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Macdonald James Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:30
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/20; F16H3/22; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/19274; Y10T74/19279; Y10T74/19284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB355482A
Cited
US2075798A
Cited
US2248133A
Cited
US2304863A
Cited
US2320757A
Cited
CH231746A
Cited
US2379164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |