US1215665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring arrangement especially for contact devices.
Assignee: Individual
•
Filing: 1915-04-05
•
Granted: 1917-02-13
•
Expires: 1935-04-05
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; Y; Y10; Y10S; Y10S200/00; Y10S200/28; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896; Y10T74/18904
Claims Analysis
Total Claims: 0
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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) | 1920-02-13 | 1920-08-14 | 1921-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-02-13 | 1924-08-14 | 1925-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-02-13 | 1928-08-14 | 1929-02-13 | $7700.00 | Window Closed / Lapsed |