Patent US3100818A successfully refreshed from Google Patents.
US3100818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication systems
Assignee: Individual
•
Filing: 1959-11-06
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Granted: 1963-08-13
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Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:45
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1891299A
Cited
US2018464A
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US2079089A
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US2295153A
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US2528636A
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US2539139A
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US2696529A
Cited
US2657304A
Cited
US2766324A
Cited
US2831923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |