US2787211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding devices for hectographic duplicating machines
Assignee: Block and Anderson Ltd
•
Filing: 1953-10-09
•
Granted: 1957-04-02
•
Expires: 1973-10-09
Abstract
No abstract record available.
Inventors
- 👤 Brown Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:36
CPC Classifications
B; B41; B41L; B41L39/00; B41L39/04; B41L39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1570592A
Cited
DE543985C
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US2064071A
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US2216591A
Cited
US2204715A
Cited
US2622518A
Cited
US2594179A
Cited
US2558046A
Cited
US2633795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |