US2734400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
andershock
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
2026-10-23 16:56
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/46; F16H3/48; F16H3/52; F16H3/54; E; E21; E21C; E21C29/00; E21C29/22; F16H61/00; F16H61/02; F16H61/0293; F16H2716/00; F16H2716/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US564488A
Cited
US985511A
Cited
US1223514A
Cited
US1428221A
Cited
US1872541A
Cited
US1881931A
Cited
US2248240A
Cited
FR887930A
Cited
US2350810A
Cited
US2398716A
Cited
US2561936A
Cited
US2544061A
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 |