Patent US964703A successfully refreshed from Google Patents.
Patent US851266A successfully refreshed from Google Patents.
US851266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line-selector of intercommunication telephone apparatus.
Assignee: Individual
•
Filing: 1904-11-22
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Granted: 1907-04-23
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Expires: 1924-11-22
Abstract
No abstract record available.
Inventors
- 👤 Franz Walloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1910-04-22 | 1910-10-22 | 1911-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-22 | 1914-10-22 | 1915-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-22 | 1918-10-22 | 1919-04-23 | $7700.00 | Window Closed / Lapsed |