US2781144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riveting apparatus
Assignee: GRIGSBY ALLISON Co Inc
•
Filing: 1950-04-11
•
Granted: 1957-02-12
•
Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:56
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/02; B21J15/10; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4501; Y10T83/4577; Y10T83/4579; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8845
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |