Patent US3424425A successfully refreshed from Google Patents.
US3424425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for articles having side holes
Assignee: Westinghouse Electric Corp
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Filing: 1965-10-07
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Granted: 1969-01-28
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Expires: 1985-10-07
Abstract
No abstract record available.
Inventors
- 👤 Calvin J Holtkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:02
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/0033; B22; B22C; B22C9/00; B22C9/06; B29C33/44; B29C33/48; Y; Y10; Y10S; Y10S425/00; Y10S425/058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN A MOLD FOR MAKING A UNITARY STRUCTURE WITH A SIDE HOLE, IN COMBINATION, A MALE DIE COMPRISING A PROJECTION IN THE BOTTOM WALL THEREOF, A FEMALE DIE COMPRISING A PUNCH ELEMENT IN THE INNER SURFACE OF A VERTICAL WALL THEREOF, THE LEADING EDGE OF SAID PUNCH ELEMENT HAVING A
Claim 2
Dependent Claim
50 words
IN A MOLD FOR MAKING A UNITARY STRUCTURE WITH A SIDE HOLE, IN COMBINATION, A MALE DIE COMPRISING A PROJECTION IN THE BOTTOM WALL THEREOF, A FEMALE DIE COMPRISING A PUNCH ELEMENT IN THE INNER SURFACE OF A VERTICAL WALL THEREOF, THE LEADING EDGE OF SAID PUNCH ELEMENT HAVING A
References Cited (Backward Citations)
US2706841A
Cited
US2783502A
Cited
US3099046A
Cited
US3060509A
Cited
US3226771A
Cited
US3300816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |