Patent US3453376A successfully refreshed from Google Patents.
Patent US3240885A successfully refreshed from Google Patents.
US3240885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple switching apparatus
Assignee: AT&T Inc
•
Filing: 1963-05-07
•
Granted: 1966-03-15
•
Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Philip J Grunfelder
- 👤 Laurin L Sevebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/23; H01; H01H; H01H13/00; H01H13/70; H01H13/7013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN A COMPOSITE SWITCH, A FIRST CONDUCTIVE PLANAR PLATE HAVING A PLURALITY OF UNDULATING SLITS TO FORM AN ARRAY OF RESILIENT TAB CONTACTS IN THE PLANE OF THE PLATE, A SECOND CONDUCTIVE PLANAR PLATE HAVING AN AREA COEXTENSIVE WITH THE TABS IN SAID FIRST PLATE, MEANS BETWEEN SAID FIRST AND SECOND PLATES FOR SUPPORTING AND INSULATING SAID PLATES IN SPACED PARALLEL RELATIONSHIP,
Claim 2
Dependent Claim
62 words
IN A COMPOSITE SWITCH, A FIRST CONDUCTIVE PLANAR PLATE HAVING A PLURALITY OF UNDULATING SLITS TO FORM AN ARRAY OF RESILIENT TAB CONTACTS IN THE PLANE OF THE PLATE, A SECOND CONDUCTIVE PLANAR PLATE HAVING AN AREA COEXTENSIVE WITH THE TABS IN SAID FIRST PLATE, MEANS BETWEEN SAID FIRST AND SECOND PLATES FOR SUPPORTING AND INSULATING SAID PLATES IN SPACED PARALLEL RELATIONSHIP,
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |