US2579463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate opener
Assignee: Individual
•
Filing: 1949-05-03
•
Granted: 1951-12-25
•
Expires: 1969-05-03
Abstract
No abstract record available.
Inventors
- 👤 Enoch S Berglund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:35
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/1041; E05F1/1066; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44265
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |