Patent US2856189A successfully refreshed from Google Patents.
US2856189A
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Method of and apparatus for stacking envelopes and like articles
Assignee: Berkley Machine Co
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Filing: 1955-10-12
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Granted: 1958-10-14
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Expires: 1975-10-12
Abstract
No abstract record available.
Inventors
- 👤 Winkler Richard
- 👤 Dunnebier Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:57
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/92; B31B70/98; B31B2160/00; B31B2160/10; B31B70/986; B65; B65H; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4214; B65H2301/42146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1269673A
Cited
DE530526C
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FR766133A
Cited
US2140112A
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US2082240A
Cited
US2233850A
Cited
US2421874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |