US3240914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dies
Assignee: Motors Liquidation Co
•
Filing: 1962-11-28
•
Granted: 1966-03-15
•
Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 David H Hill
- 👤 Barton L Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:28
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF MAKING MATING DIE MEMBERS COMPRISING THE STEPS OF APPLYING HARD CUTTING TOOL MATERIAL TO THE CUTTING EDGES OF BOTH DIE MEMBERS AND ELECTRICALLY REMOVING STOCK FROM ONE DIE MEMBER WITH THE DIE MEMBERS HAVING OPPOSITE POLARITIES AND SUBSEQUENTLY ELECTRICALLY REMOVING STOCK FROM THE OTHER DIE MEMBER AFTER REVERSING THE POLARITIES OF THE DIE MEMBERS AND AS THE DIE MEMBERS ARE FED INTO EACH OTHER SO THAT THE CUTTING EDGES ON BOTH DIE MEMBERS ARE EACH MACHINED LAST TO PREDETERMINED FINISHED DIMENSIONS.
Claim 2
Independent Claim
84 words
THE METHOD OF MAKING MATING DIE MEMBERS COMPRISING THE STEPS OF APPLYING HARD CUTTING TOOL MATERIAL TO THE CUTTING EDGES OF BOTH DIE MEMBERS AND ELECTRICALLY REMOVING STOCK FROM ONE DIE MEMBER WITH THE DIE MEMBERS HAVING OPPOSITE POLARITIES AND SUBSEQUENTLY ELECTRICALLY REMOVING STOCK FROM THE OTHER DIE MEMBER AFTER REVERSING THE POLARITIES OF THE DIE MEMBERS AND AS THE DIE MEMBERS ARE FED INTO EACH OTHER SO THAT THE CUTTING EDGES ON BOTH DIE MEMBERS ARE EACH MACHINED LAST TO PREDETERMINED FINISHED DIMENSIONS.
References Cited (Backward Citations)
US2800566A
Cited
US2924701A
Cited
US2927190A
Cited
US3063310A
Cited
US3120601A
Cited
US3148446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |