US3570110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brazing
Assignee: Duracell Inc USA
•
Filing: 1969-04-18
•
Granted: 1971-03-16
•
Expires: 1989-04-18
Abstract
Abstract A METHOD OF MAKING A BRAZED JOINT COMPRISING CONTACTING A TUNGSTEN MEMBER AND A COPPER MEMBER WITH A BRAZING ALLOY OF SILVER, COPPER AND TITANIUM IN A VACUUM ATMOSPHERE AT AN ELEVATED TEMPERATURE SUFFICIENT TO CAUSE SAID BRAZING ALLOY TO WET SAID TUNGSTEN MEMBER AND SAID COPPER MEMBER, THEREBY JOINING SAID MEMBERS.
Inventors
- 👤 Edward J Zdanuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:39
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/06; C22C5/08; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284; Y10T428/12861; Y10T428/12896; Y10T428/12903
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |