US2860428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate
Assignee: Individual
•
Filing: 1956-08-30
•
Granted: 1958-11-18
•
Expires: 1976-08-30
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Flathman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:49
CPC Classifications
E; E05; E05F; E05F13/00; E05F13/04; E06; E06B; E06B11/00; E06B11/02; E05Y; E05Y2900/00; E05Y2900/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |