US2629781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone call counting device
Assignee: Individual
•
Filing: 1948-05-21
•
Granted: 1953-02-24
•
Expires: 1968-05-21
Abstract
No abstract record available.
Inventors
- 👤 Feinstein Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
G; G04; G04B; G04B47/00; G04B47/06; G04B47/061; G04F; G04F7/00; G04F7/04; G04F7/06; H; H04; H04M; H04M1/00; H04M1/02; H04M1/23; H04M15/00; H04M15/28; H04M15/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1474053A
Cited
US1897533A
Cited
US2075056A
Cited
CH171185A
Cited
US2115280A
Cited
US2072657A
Cited
US2462839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |