US2642940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating and slotting punch
Assignee: Unisys Corp
•
Filing: 1948-07-17
•
Granted: 1953-06-23
•
Expires: 1968-07-17
Abstract
No abstract record available.
Inventors
- 👤 Karl J Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
G; G06; G06K; G06K21/00; G06K21/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1773155A
Cited
US2049003A
Cited
US2035777A
Cited
US2062155A
Cited
US2392082A
Cited
US2342361A
Cited
US2439029A
Cited
US2439030A
Cited
US2521118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |