US2907827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone device
Assignee: SHERIDAN GALLAGHER
•
Filing: 1955-07-22
•
Granted: 1959-10-06
•
Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Louis A Voell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:06
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/62; H04M1/02; H04M1/21; H04M1/215; H04M1/2155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1630536A
Cited
US2402341A
Cited
US2543761A
Cited
US2615098A
Cited
US2562069A
Cited
US2539139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |