Patent US3281536A successfully refreshed from Google Patents.
US3281536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pcm switching stage and its associated circuits
Assignee: International Standard Electric Corp
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Filing: 1962-08-17
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Granted: 1966-10-25
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Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
- 👤 Dupieux Jacques Georges
- 👤 Seneque Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:56
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0407; H04J; H04J3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A TIME-DIVISION MULTIPLEX TELEPHONE SWITCHING SYSTEM, A PLURALITY OF ROW TRUNKS AND A PLURALITY OF COLUMN TRUNKS WITH EACH TRUNK COMPRISING AN INCOMING AND AN OUTGOING MULTIPLEX TRANSMISSION LINE AND WITH EACH TRANSMISSION LINE HAVING A PLURALITY OF TIME-DIVISION MULTIPLEX CHANNELS THEREON CORRESPONDING TO EQUAL TIME INTERVALS, A PLURALITY OF INCOMING DATA STORES FOR RESPECTIVE ONES OF SAID CHANNELS ON SAID INCOMING TRANSMISSION LINES, OUTGOING DATA STORES FOR RESPECTIVE ONES OF SAID CHANNELS ON SAID OUTGOING TRANSMISSIONS LINES, TIME PATH STORES FOR RESPECTIVE CHANNEL TIME INTERVALS AN SPACE PATH STORES FOR STORING COLUMN TRUNK IDENTITY DATA, SWITCHING MEANS, MEANS FOR CONTROLLING SAID SWITCHING MEANS TO EXTEND A TIME-DIVISION CONNECTION FROM A CALLING ONE OF SAID CHANNELS TO A CALLED ONE OF SAID CHANNELS IN ACCORDANCE WITH THE COLUMN TRUNK IDENTITY DATA STORED IN THE SAID SPACE PATH STORES, AND MEANS FOR TRANSFERRING
Claim 2
Dependent Claim
143 words
IN A TIME-DIVISION MULTIPLEX TELEPHONE SWITCHING SYSTEM, A PLURALITY OF ROW TRUNKS AND A PLURALITY OF COLUMN TRUNKS WITH EACH TRUNK COMPRISING AN INCOMING AND AN OUTGOING MULTIPLEX TRANSMISSION LINE AND WITH EACH TRANSMISSION LINE HAVING A PLURALITY OF TIME-DIVISION MULTIPLEX CHANNELS THEREON CORRESPONDING TO EQUAL TIME INTERVALS, A PLURALITY OF INCOMING DATA STORES FOR RESPECTIVE ONES OF SAID CHANNELS ON SAID INCOMING TRANSMISSION LINES, OUTGOING DATA STORES FOR RESPECTIVE ONES OF SAID CHANNELS ON SAID OUTGOING TRANSMISSIONS LINES, TIME PATH STORES FOR RESPECTIVE CHANNEL TIME INTERVALS AN SPACE PATH STORES FOR STORING COLUMN TRUNK IDENTITY DATA, SWITCHING MEANS, MEANS FOR CONTROLLING SAID SWITCHING MEANS TO EXTEND A TIME-DIVISION CONNECTION FROM A CALLING ONE OF SAID CHANNELS TO A CALLED ONE OF SAID CHANNELS IN ACCORDANCE WITH THE COLUMN TRUNK IDENTITY DATA STORED IN THE SAID SPACE PATH STORES, AND MEANS FOR TRANSFERRING
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |