US3605535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined punching and cornering apparatus and method
Assignee: SOUTHWORTH MACHINE CO
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Filing: 1969-12-18
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Granted: 1971-09-20
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Expires: 1989-12-18
Abstract
Abstract AN AUTOMATIC PUNCHING MACHINE HAVING A SET OF PUNCHES ALONG ONE SIDE OF A PUNCHING STATION, INCLUDES A PAIR OF INDEPENDENTLY OPERABLE DIE CUTTING HEADS DETACHABLY FIXED ON THE OTHER SIDE OF THE PUNCHING STATION. EACH INDIVIDUAL AND SUCCESSIVE LIFT, OR STACKS, OF LIMP SHEETS ADVANCES ALONG A PATH AND HALTS AT THE PUNCHING STATION WHILE THE BINDING APERTURES ARE PUNCHED AND THE OUTER CORNERS ROUNDED, STRAIGHT CUT, NOTCHED, ETC., SUB- STANTIALLY SIMULTANEOUSLY, AND WHILE THE SHEETS OF THE LIFT ARE CLAMPED ONTO THE TABLE AND IN REGISTRATION WITH THE BACK GAUGE.
Inventors
- 👤 George D Love
- 👤 Edson H Stacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:43
CPC Classifications
B; B26; B26D; B26D9/00; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0529; Y10T83/444; Y10T83/447; Y10T83/4473; Y10T83/4645; Y10T83/808; Y10T83/817; Y10T83/822; Y10T83/825; Y10T83/929; Y10T83/9411; Y10T83/9418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |