US2634028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury dispenser
Assignee: AT&T Inc
•
Filing: 1947-12-31
•
Granted: 1953-04-07
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 John T L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:33
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/3109; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1290647A
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US1456469A
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US1685666A
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US2157596A
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US2308516A
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US2252119A
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US2348831A
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US2430078A
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US2378949A
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US2415019A
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US2423173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |