US2734387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jansen
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:11
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01H9/0027; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US164212A
Cited
USRE18933E
Cited
US795235A
Cited
US876355A
Cited
US1540247A
Cited
US2009383A
Cited
US2177109A
Cited
US2231696A
Cited
US2427621A
Cited
US2453560A
Cited
GB621078A
Cited
US2513677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |