US3405029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding transducers to delay lines
Assignee: AT&T Inc
•
Filing: 1967-05-19
•
Granted: 1968-10-08
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Maurice H Hanes
- 👤 George E Helmke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:26
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31529
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3075871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |