US2736888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hospital annunciator system
Assignee: Individual
•
Filing: 1953-02-09
•
Granted: 1956-02-28
•
Expires: 1973-02-09
Abstract
No abstract record available.
Inventors
- 👤 George H Mclain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:54
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24; G08B5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1626560A
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US1230410A
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US1116407A
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US1751972A
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US1826501A
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US2374439A
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US2333406A
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US2622141A
Cited
US2599702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |