US2594733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annunciator for elevators and the like
Assignee: Individual
•
Filing: 1948-05-03
•
Granted: 1952-04-29
•
Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Coyne David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:08
CPC Classifications
G; G09; G09F; G09F13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US725001A
Cited
US651163A
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US711202A
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US773931A
Cited
US1132607A
Cited
US1351562A
Cited
US2227861A
Cited
US2286014A
Cited
US2385254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |