Patent US1487416A successfully refreshed from Google Patents.
US1487416A
Expired / Lapsed
US
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Traction element for tractors
Assignee: Individual
•
Filing: 1921-10-01
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Granted: 1924-03-18
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Expires: 1941-10-01
Abstract
No abstract record available.
Inventors
- 👤 Fred B Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:12
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/26; B62D55/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49448; Y10T29/49449
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-03-18 | 1927-09-17 | 1928-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-03-18 | 1931-09-17 | 1932-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-03-18 | 1935-09-17 | 1936-03-18 | $7700.00 | Window Closed / Lapsed |