Patent US3136838A successfully refreshed from Google Patents.
US3136838A
Expired / Lapsed
US
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Filter system
Assignee: Thomas International Corp
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Filing: 1960-05-27
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Granted: 1964-06-09
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Heytow Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:41
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/06; G10H1/12; Y; Y10; Y10S; Y10S84/00; Y10S84/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
FILTER SYSTEM COMPRISING A PLURALITY OF SERIES CONNECTED, REACTIVE ELEMENTS, A PLURALITY OF INPUT TERMINALS CONNECTED RESPECTIVELY TO THE JUNCTIONS OF SAID REACTIVE ELEMENTS, A SINGLE OUTPUT TERMINAL REACTIVE CIRCUIT MEANS CONNECTING SAID OUTPUT TERMINAL TO SAID REACTIVE ELEMENTS, A PLURALITY OF SUCCESSIVE SIGNAL GENERATING SOURCES EACH EFFECTIVE TO DELIVER A SIGNAL OF COMPLEX WAVE SHAPE, SAID SOURCES GENERATING SIGNALS HAVING FUNDAMENTALS OF SUCCESSIVELY INCREASING FREQUENCY, AND CIRCUIT MEANS CONNECTING SAID SUCCESSIVE SIGNAL GENERATING SOURCES SELECTIVELY TO CORRESPONDING ONES OF SAID INPUT TERMINALS.
Claim 2
Dependent Claim
83 words
FILTER SYSTEM COMPRISING A PLURALITY OF SERIES CONNECTED, REACTIVE ELEMENTS, A PLURALITY OF INPUT TERMINALS CONNECTED RESPECTIVELY TO THE JUNCTIONS OF SAID REACTIVE ELEMENTS, A SINGLE OUTPUT TERMINAL REACTIVE CIRCUIT MEANS CONNECTING SAID OUTPUT TERMINAL TO SAID REACTIVE ELEMENTS, A PLURALITY OF SUCCESSIVE SIGNAL GENERATING SOURCES EACH EFFECTIVE TO DELIVER A SIGNAL OF COMPLEX WAVE SHAPE, SAID SOURCES GENERATING SIGNALS HAVING FUNDAMENTALS OF SUCCESSIVELY INCREASING FREQUENCY, AND CIRCUIT MEANS CONNECTING SAID SUCCESSIVE SIGNAL GENERATING SOURCES SELECTIVELY TO CORRESPONDING ONES OF SAID INPUT TERMINALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |