US2614646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency receiving bell with an
Assignee: —
•
Filing: —
•
Granted: 1952-10-21
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:19
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321266A
Cited
US2258743A
Cited
US705934A
Cited
US863571A
Cited
US1157428A
Cited
US1784172A
Cited
GB279305A
Cited
US2225509A
Cited
US2336669A
Cited
US2456346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |