US3521861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle lift
Assignee: Gray Manufacturing Co Inc
•
Filing: 1967-11-03
•
Granted: 1970-07-28
•
Expires: 1987-11-03
Abstract
No abstract record available.
Inventors
- 👤 Frank D Freudenthal
- 👤 Gilbert W Gaarder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:42
CPC Classifications
B; B66; B66F; B66F5/00; B66F5/04; B66F3/00; B66F3/24; B66F3/25; B66F3/35
Claims Analysis
Total Claims: 0
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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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |