US3530970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifter for use with automatic tong unloader
Assignee: PPG Industries Inc
•
Filing: 1968-07-03
•
Granted: 1970-09-29
•
Expires: 1988-07-03
Abstract
No abstract record available.
Inventors
- 👤 Ronald E Richardson
- 👤 Gordon F Pereman
- 👤 John D Kellar
- 👤 Jan G Borremans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:25
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/067; C; C03; C03B; C03B35/00; C03B35/14; C03B35/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2478034A
Cited
US3122362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |