Patent US2816000A successfully refreshed from Google Patents.
US2816000A
Expired / Lapsed
US
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Power driven filing apparatus
Assignee: Simpla Res & Manufacturing Co Inc
•
Filing: 1951-08-27
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Granted: 1957-12-10
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Expires: 1971-08-27
Abstract
No abstract record available.
Inventors
- 👤 Richard P Scholfield
- 👤 Henry J Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:10
CPC Classifications
A; A47; A47B; A47B63/00; A47B63/06; A47B63/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US867804A
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US893563A
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US1008823A
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US1643224A
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US1907971A
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US2125619A
Cited
US2223997A
Cited
US2419392A
Cited
US2603547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |