Patent US2928151A successfully refreshed from Google Patents.
US2928151A
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US
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Assignee: Patent Button Co
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Filing: 1956-03-07
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Granted: 1960-03-15
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Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Edward J Rozanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:41
CPC Classifications
A; A44; A44B; A44B17/00; A44B17/0064; A44B17/0082; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3685; Y10T24/45; Y10T24/45225; Y10T24/4588; Y10T24/45906; Y10T24/45927
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1471809A
Cited
US1592663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |