US2529410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling coin receptacles of pay station telephones
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1947-07-02
•
Granted: 1950-11-07
•
Expires: 1967-07-02
Abstract
No abstract record available.
Inventors
- 👤 Harry N Newstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:45
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1616402A
Cited
US1753334A
Cited
US1917884A
Cited
US2217041A
Cited
US2226730A
Cited
US2357576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |