Patent US3477096A successfully refreshed from Google Patents.
US3477096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing vacuum port for dry bag isostatic moulding press
Assignee: National Forge Co
•
Filing: 1967-07-20
•
Granted: 1969-11-11
•
Expires: 1987-07-20
Abstract
No abstract record available.
Inventors
- 👤 Arnold G Bowles
- 👤 James M Manelick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:16
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/001; Y; Y10; Y10S; Y10S425/00; Y10S425/019; Y10S425/026
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2101015A
Cited
US2152738A
Cited
US2449407A
Cited
US2765494A
Cited
US2766484A
Cited
US2803043A
Cited
US3034191A
Cited
US3114934A
Cited
US3258384A
Cited
US3172153A
Cited
US3263008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |