US2729935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the strength of a sprocket chain
Assignee: Chain Belt Co
•
Filing: 1950-11-24
•
Granted: 1956-01-10
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
B; B21; B21L; B21L9/00; B21L9/02; B21L9/04; F; F16; F16G; F16G13/00; F16G13/02; F16G13/06; F16G13/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1966659A
Cited
US2517497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |