US2592066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memo pad attachment for telephones
Assignee: A & J Machine Engineering Co I
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Filing: 1949-10-24
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Granted: 1952-04-08
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Expires: 1969-10-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
B; B42; B42D; B42D19/00; H; H04; H04M; H04M1/00; H04M1/02; H04M1/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2511771A
Cited
US1365082A
Cited
US1390705A
Cited
US1612258A
Cited
US1577631A
Cited
US2471504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |