Patent US3021998A successfully refreshed from Google Patents.
US3021998A
Expired / Lapsed
US
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Electrically operated tape perforating machine
Assignee: INTERNATIONAL TYPOGRAPHICAL UNION OF NORTH AMERICA
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Filing: 1958-09-26
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Granted: 1962-02-20
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Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Claire N Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
B; B41; B41B; B41B25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2222631A
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US2069240A
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US2353034A
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US2784785A
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US2679902A
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US2737240A
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US2859276A
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US2902092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |