Patent US1955866A successfully refreshed from Google Patents.
US1955866A
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US
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Method and apparatus for perforating sheet material
Assignee: Individual
•
Filing: 1932-02-04
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Granted: 1934-04-24
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Expires: 1952-02-04
Abstract
No abstract record available.
Inventors
- 👤 George F Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:02
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49895; Y10T29/49897; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0577; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/883; Y10T83/8855
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) | 1937-04-23 | 1937-10-23 | 1938-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-04-23 | 1941-10-23 | 1942-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-04-23 | 1945-10-23 | 1946-04-24 | $7700.00 | Window Closed / Lapsed |