Patent US2932142A successfully refreshed from Google Patents.
US2932142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for opening letter envelopes, bags, or like articles
Assignee: International Standard Electric Corp
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Filing: 1956-03-22
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Granted: 1960-04-12
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Expires: 1976-03-22
Abstract
No abstract record available.
Inventors
- 👤 Sindzinski Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:47
CPC Classifications
B; B65; B65B; B65B67/00; B65B67/12; B65B43/00; B65B43/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2418142A
Cited
US2834166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |