US2734932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device
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
2026-11-01 12:27
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; F; F16; F16P; F16P7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2327558A
Cited
US1107245A
Cited
US1266551A
Cited
US1651919A
Cited
US1400870A
Cited
DE384082C
Cited
US1611219A
Cited
US1775449A
Cited
US2191247A
Cited
US2255981A
Cited
US2395248A
Cited
US2530461A
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 |