US2815207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for feeding envelopes and similar workpieces individually from a stack to a printing mechanism
Assignee: WALBERT MACHINE Co
•
Filing: 1953-04-16
•
Granted: 1957-12-03
•
Expires: 1973-04-16
Abstract
No abstract record available.
Inventors
- 👤 Ross E Skow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:51
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/10; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/423; B65H2301/4232; B65H2301/42322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US872108A
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US1394613A
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US1637833A
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US2251945A
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US2248004A
Cited
US2259672A
Cited
US2384768A
Cited
US2518042A
Cited
US2635538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |