Patent US3502837A successfully refreshed from Google Patents.
US3502837A
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Method of producing a solder-free gas-tight joint,and joint produced thereby
Assignee: Siemens AG
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Filing: 1967-01-16
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Granted: 1970-03-24
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Expires: 1987-01-16
Abstract
No abstract record available.
Inventors
- 👤 Martin Peehs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:02
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/26; C04B2235/00; C04B2235/60; C04B2235/604; C04B2235/65; C04B2235/66; C04B2235/666; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/50; C04B2237/52; C04B2237/62; C04B2237/70; C04B2237/708; C04B2237/76; C04B2237/765; C04B2237/86; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 0
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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) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |