US3445625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making porous low density metal member from powdered metal
Assignee: Varian Medical Systems Inc
•
Filing: 1964-09-03
•
Granted: 1969-05-20
•
Expires: 1984-09-03
Abstract
No abstract record available.
Inventors
- 👤 James S Hetherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:12
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F2998/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2299228A
Cited
US2195297A
Cited
US2355954A
Cited
US2604517A
Cited
US2616953A
Cited
US2789901A
Cited
US3144328A
Cited
US3293006A
Cited
US3250892A
Cited
US3317705A
Cited
US3140944A
Cited
US3241956A
Cited
US3320059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |