Patent US2846680A successfully refreshed from Google Patents.
US2680720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric crystal body comprised of rubidium compound
Assignee: Clevite Corp
•
Filing: 1948-05-18
•
Granted: 1954-06-08
•
Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jaffe Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02007; H03H9/02015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
AS AN ARTICLE OF MANUFACTURE, A TETRAGONAL PIEZOELECTRIC CRYSTAL BODY COMPRISED OF PRIMARY RUBIDIUM ARSENATE.
Claim 2
Dependent Claim
15 words
AS AN ARTICLE OF MANUFACTURE, A TETRAGONAL PIEZOELECTRIC CRYSTAL BODY COMPRISED OF PRIMARY RUBIDIUM ARSENATE.
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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |