US2647165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for breaking contact resistance in a marker-controlled selector
Assignee: Hartford National Bank and Trust Co
•
Filing: 1949-07-29
•
Granted: 1953-07-28
•
Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Buchner Robert Bertold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:51
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE277368C
Cited
USRE22794E
Cited
US1620090A
Cited
US1708982A
Cited
US2057890A
Cited
US2183838A
Cited
US2222108A
Cited
US2238223A
Cited
US2179826A
Cited
US2308860A
Cited
US2354682A
Cited
GB583574A
Cited
US2454781A
Cited
US2462074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |