US3469892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded-bearing roller for suspension devices
Assignee: Watsco Inc
•
Filing: 1968-06-03
•
Granted: 1969-09-30
•
Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 Hall Langstroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:26
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/60; F16C33/605; F16C13/00; F16C13/006; F16C35/00; F16C35/04; F16C35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751453A
Cited
US1784910A
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US1901648A
Cited
US1963592A
Cited
US2805107A
Cited
GB884170A
Cited
US3148005A
Cited
US3271826A
Cited
US3293685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |