US3022387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone attachment
Assignee: LAURA W TRIEST
•
Filing: 1958-10-01
•
Granted: 1962-02-20
•
Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Richard H Bair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/03; H04M1/21; H04M1/215; H04M1/2155
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1204136A
Cited
GB452186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |