Patent US2604829A successfully refreshed from Google Patents.
US2604829A
Expired / Lapsed
US
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Drier mechanism for envelope machines
Assignee: United States Envelope Co
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Filing: 1948-04-17
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Granted: 1952-07-29
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Expires: 1968-04-17
Abstract
No abstract record available.
Inventors
- 👤 Vincent E Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/62; B31B70/626; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |