US2877302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone equipment
Assignee: Gai Tronics Corp
•
Filing: 1956-04-23
•
Granted: 1959-03-10
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Radomski
- 👤 Allan R Royle
- 👤 Carl M Wenrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1241566A
Cited
US1844790A
Cited
US2619550A
Cited
US2702371A
Cited
US2685066A
Cited
US2681989A
Cited
US2786099A
Cited
US2801287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |