Patent US3187549A successfully refreshed from Google Patents.
US3187549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented die assembly
Assignee: North American Aviation Corp
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Filing: 1961-10-03
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Granted: 1965-06-08
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Charles W Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:59
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08; B21D37/00; B21D37/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A SEGMENTED FEMALE DIE ASSEMBLY COMPRISING A FIRST LAYER OF FIRST DIE SEGMENTS ARRANGED TO HAVE THEIR RESPECTIVE ADJACENT EDGES IN SUBSTANTIAL ABUTTING REALTION TO EACH OTHER, A SECOND LAYER OF SECOND DIE SEGMENTS ARRANGED ON SAID FIRST LAYER WITH SAID SECOND SEGMENT OVERLAPPING THE ADJACENT ABUTTING EDGES FORMED BY SAID FIRST SEGMENTS AND MEANS SECURING SAID FIRST AND SECOND LAYERS IN RELATIVELY FIXED RELATION TO EACH OTHER.
Claim 2
Dependent Claim
68 words
A SEGMENTED FEMALE DIE ASSEMBLY COMPRISING A FIRST LAYER OF FIRST DIE SEGMENTS ARRANGED TO HAVE THEIR RESPECTIVE ADJACENT EDGES IN SUBSTANTIAL ABUTTING REALTION TO EACH OTHER, A SECOND LAYER OF SECOND DIE SEGMENTS ARRANGED ON SAID FIRST LAYER WITH SAID SECOND SEGMENT OVERLAPPING THE ADJACENT ABUTTING EDGES FORMED BY SAID FIRST SEGMENTS AND MEANS SECURING SAID FIRST AND SECOND LAYERS IN RELATIVELY FIXED RELATION TO EACH OTHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |