US2709728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay
Assignee: W N BORG CORP
•
Filing: 1950-06-07
•
Granted: 1955-05-31
•
Expires: 1970-06-07
Abstract
No abstract record available.
Inventors
- 👤 William L Tancred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001579A
Cited
US2015156A
Cited
DE699682C
Cited
US2288451A
Cited
US2495633A
Cited
US2510700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |