US3467876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse modulation system
Assignee: Panasonic Holdings Corp
•
Filing: 1967-12-06
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Granted: 1969-09-16
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Expires: 1987-12-06
Abstract
No abstract record available.
Inventors
- 👤 Yoshinobu Tatsuzawa
- 👤 Kosaku Uchida
- 👤 Kazuaki Mayumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H03; H03K; H03K7/00; H04B14/06; H04B14/062; H04B14/064; H04J; H04J3/00; H04J3/16; H04J3/1682; H04J3/1688; H04L; H04L5/00; H04L5/22; H04L5/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2662118A
Cited
US2744959A
Cited
US2889521A
Cited
US2897275A
Cited
US3013159A
Cited
US3274497A
Cited
US3408581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |