US2296136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for perforating sheet material
Assignee: IRENE N BECHTEL
•
Filing: 1942-02-13
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Granted: 1942-09-15
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Expires: 1962-02-13
Abstract
No abstract record available.
Inventors
- 👤 Marley E Bechtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:20
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2163; Y10T83/2166; Y10T83/869; Y10T83/8752; Y10T83/8753; Y10T83/8798; Y10T83/8799; Y10T83/8801; Y10T83/8821; Y10T83/8841; Y10T83/8853; 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) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |