US2778638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for stacking letters and like articles
Assignee: HALL TELEPHONE ACCESSORIES Ltd
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Filing: 1951-06-22
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Granted: 1957-01-22
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Expires: 1971-06-22
Abstract
No abstract record available.
Inventors
- 👤 Whillock Arthur Frederick
- 👤 Williams Francis Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/38; B65H29/42; B65H31/00; B65H31/04; B65H31/06; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4214; B65H2701/00; B65H2701/10; B65H2701/19; B65H2701/1912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625861A
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US895833A
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US902668A
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US1035716A
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US1603294A
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US1576243A
Cited
US2095063A
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US2529031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |