CH278418A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Electromagnetic waveguide.
Assignee: Nat Res Dev
•
Filing: 1948-10-06
•
Granted: —
•
Expires: 1968-10-06
Abstract
No abstract record available.
Inventors
- 👤 Corporation Nation Development
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-08 05:00
CPC Classifications
H; H05; H05H; H05H9/00; H05H9/02; C; C04; C04B; C04B28/00; C04B28/02; C04B7/00; C04B7/36; C04B7/48; C04B7/52; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/36; H01J25/00; H01J25/34; H01J25/36; H01J25/38; H01J25/42; H01J25/44; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/211; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
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
Maintenance schedule is calculated for granted US utility patents.