Patent US2749986A successfully refreshed from Google Patents.
US2749986A
Expired / Lapsed
US
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Machine for operating upon perforated record cards
Assignee: Individual
•
Filing: 1951-07-25
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Granted: 1956-06-12
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Expires: 1971-07-25
Abstract
No abstract record available.
Inventors
- 👤 Maul Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:50
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1856737A
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AT125360B
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US2168434A
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US2210552A
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US2315741A
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US2279161A
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US2547456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |