US3473568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulator construction system for logic circuits and the like
Assignee: Siemens AG
•
Filing: 1966-11-23
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Granted: 1969-10-21
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Expires: 1986-11-23
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Pfitzner
- 👤 Kurt Bantle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:29
CPC Classifications
F; F15; F15C; F15C5/00; F15C1/00; F15C1/02; F15C1/06; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2224; Y10T137/8593; Y10T137/877; Y10T137/87885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2947320A
Cited
US3057551A
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US3076473A
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US3107850A
Cited
US3225779A
Cited
US3261372A
Cited
US3285265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |