US2813599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating device for bicycle sprocket chain
Assignee: WESTFIELD MANUFACTURING Co
•
Filing: 1955-03-11
•
Granted: 1957-11-19
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 John A Amberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:22
CPC Classifications
B; B62; B62J; B62J31/00; F; F16; F16H; F16H57/00; F16H57/04; F16H57/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US501626A
Cited
US556786A
Cited
US2007217A
Cited
GB189500665A
Cited
US635778A
Cited
CH18963A
Cited
US653445A
Cited
US1798450A
Cited
GB399610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |