US3144533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury relay
Assignee: PNC Bank NA
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Filing: 1962-03-16
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Granted: 1964-08-11
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Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Donath Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/18; H01H1/00; H01H1/06; H01H1/08; H01H51/00; H01H51/28; H01H51/288
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A RELAY COMPRISING AN ENVELOPE, A QUANTITY OF CONDUCTING LIQUID HAVING HIGH SURFACE TENSION LOCATED IN SAID ENVELOPE, CONTACT SURFACES AND SURFACES MUTUALLY INSULATING SAID CONTACT SURFACES LOCATED INTERNALLY OF SAID ENVELOPE, SAID CONTACT SURFACES ONLY BEING WETTABLE BY SAID LIUQID, AND AT LEAST IN PART FORMING PART OF SAID ENVELOPE THE
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |