Patent US3293652A successfully refreshed from Google Patents.
US3293652A
Expired / Lapsed
US
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Selective piercing of sheet material
Assignee: International Business Machines Corp
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Filing: 1964-02-20
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Granted: 1966-12-20
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 David D Roshon Jr
- 👤 Thomas Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12; G06K1/126; B; B23; B23K; B23K15/00; B23K15/08; B23K26/00; B23K26/20; B23K26/36; B23K26/38; B23K26/382; B23K26/40; B29; B29C; B29C51/00; B29C51/10; B29C51/18; B29C51/26; B29C51/30; B29C51/38; H; H05; H05K; H05K3/00; H05K3/02; H05K3/027; B23K2101/00; B23K2101/34; B23K2101/35; B23K2103/00; B23K2103/30; B23K2103/40; B23K2103/50; B23K2103/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A PIERCING APPARATUS FOR PIERCING SHEET MATERIAL HAVING RELATIVELY LOW ENERGY ABSORPTION CHARACTERISTICS, SAID SHEETS BEARING FRONT AND BACK PATTERNS OF COATING MATERIAL OF RELATIVELY HIGH ENERGY ABSORPTION CHARACTERISTICS, SAID PATTERN HAVING CODED COMBINATIONS FOR REPRESENTING THE PRESENSE OR ABSENCE OF INFORMATION; AND MEANS FOR DIRECTING ACROSS THE FRONT OF THE SHEET A LASER BEAM OF SUCH INTENSITY THAT PIERCING RESULTS ONLY IN THOSE AREAS ON WHICH APPEAR A BACK PATTERN REPRESENTING THE PRESENCE OF INFORMATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |