US2724016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone answering and recording device
Assignee: TELEPHONE ANSWERING AND RECORD
•
Filing: 1950-05-27
•
Granted: 1955-11-15
•
Expires: 1970-05-27
Abstract
No abstract record available.
Inventors
- 👤 Harry R Van Deventer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:40
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/6515
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1560226A
Cited
US2080812A
Cited
US2171366A
Cited
US2284173A
Cited
US2093675A
Cited
US2261420A
Cited
US2300239A
Cited
US2366956A
Cited
US2519568A
Cited
US2549548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |