US2997907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self aligning punching apparatus
Assignee: Individual
•
Filing: 1957-11-22
•
Granted: 1961-08-29
•
Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Constantino Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/04; Y; Y10; Y10S; Y10S83/00; Y10S83/916; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8853; Y10T83/8855; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828225A
Cited
US1571672A
Cited
US1683501A
Cited
US2168377A
Cited
US2341976A
Cited
US2501682A
Cited
US2656887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |