Patent US3531950A successfully refreshed from Google Patents.
US3531950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction drive for slow speed motor
Assignee: Goodman Co LP
•
Filing: 1968-09-17
•
Granted: 1970-10-06
•
Expires: 1988-09-17
Abstract
No abstract record available.
Inventors
- 👤 Richard A Foerstner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:08
CPC Classifications
F; F16; F16D; F16D7/00; F16D7/02; H; H05; H05B; H05B6/00; H05B6/64; H05B6/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |