US2683869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic communication system
Assignee: Individual
•
Filing: 1945-09-21
•
Granted: 1954-07-13
•
Expires: 1965-09-21
Abstract
No abstract record available.
Inventors
- 👤 William C Norris
- 👤 Robert E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:51
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB509866A
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US2198901A
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US2266668A
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US2357237A
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US2326737A
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GB549771A
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US2408819A
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US2367327A
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US2353499A
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US2401416A
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US2409012A
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US2369662A
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US2415359A
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US2425315A
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US2425316A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |