Patent US3081725A successfully refreshed from Google Patents.
US3081725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press
Assignee: Individual
•
Filing: 1958-11-17
•
Granted: 1963-03-19
•
Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ross B Treer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:33
CPC Classifications
B; B21; B21D; B21D22/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1849362A
Cited
GB542580A
Cited
US2340465A
Cited
US2482449A
Cited
US2485009A
Cited
US2616543A
Cited
US2766710A
Cited
US2701446A
Cited
US2812843A
Cited
US2770342A
Cited
US2937734A
Cited
US2912564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |