US3452628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hole punching machine for paper sheets
Assignee: Hans Sickinger Co
•
Filing: 1967-05-02
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Granted: 1969-07-01
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Ernst Pfaffle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:16
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/0007; B65; B65H; B65H3/00; B65H3/28; Y; Y10; Y10T; Y10T83/00; Y10T83/222; Y10T83/444; Y10T83/4637; Y10T83/464; Y10T83/4642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR799182A
Cited
US3278078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |