Patent US2828065A successfully refreshed from Google Patents.
US2828065A
Expired / Lapsed
US
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Quick opening construction for window envelopes
Assignee: United States Envelope Co
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Filing: 1954-08-27
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Granted: 1958-03-25
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Expires: 1974-08-27
Abstract
No abstract record available.
Inventors
- 👤 Vincent E Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/32; B65D27/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE115639C
Cited
US797337A
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US895053A
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US1494827A
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US2055716A
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US2099007A
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US2334413A
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US2349234A
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |