Patent US3531358A successfully refreshed from Google Patents.
US3531358A
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US
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Apparatus for the binding of stacked sheets
Assignee: CHARLOTTE HESSELMANN
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Filing: 1967-04-25
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Granted: 1970-09-29
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Expires: 1987-04-25
Abstract
No abstract record available.
Inventors
- 👤 Heinz Rost
- 👤 Otto Buchmann
- 👤 Karl-Heinz Hesselmann
- 👤 Wilhelm Hesselmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
B; B42; B42C; B42C9/00; B42C9/0056; Y; Y10; Y10S; Y10S412/00; Y10S412/90; Y10S412/902; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034; Y10T156/17
Claims Analysis
Total Claims: 0
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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) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |