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Patent US2970834A successfully refreshed from Google Patents.
US2970834A
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US
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Letter feeding device
Assignee: Pitney Bowes Inc
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Filing: 1957-09-06
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Granted: 1961-02-07
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Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Martin
- 👤 Walter J Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:21
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/12; B65H3/124; B65H2301/00; B65H2301/30; B65H2301/32; B65H2301/321
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US604892A
Cited
US1136960A
Cited
US1744814A
Cited
US2005079A
Cited
US2837333A
Cited
US2856187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |