Patent US2691448A successfully refreshed from Google Patents.
US2691448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic materials handling system
Assignee: Individual
•
Filing: 1949-07-20
•
Granted: 1954-10-12
•
Expires: 1969-07-20
Abstract
No abstract record available.
Inventors
- 👤 Dudley M Lontz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
E; E04; E04H; E04H6/00; E04H6/08; E04H6/12; E04H6/18; E04H6/28; E04H6/282; E04H6/285; E04H6/42; E04H6/422; Y; Y10; Y10S; Y10S194/00; Y10S194/902; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1369094A
Cited
US1370111A
Cited
GB167637A
Cited
US2120751A
Cited
US2028391A
Cited
US1780380A
Cited
US1773130A
Cited
US2070793A
Cited
US1879713A
Cited
US1869900A
Cited
US1925442A
Cited
US1966165A
Cited
US1931071A
Cited
US2009536A
Cited
GB409552A
Cited
US2080964A
Cited
US2223146A
Cited
US2204023A
Cited
US2184101A
Cited
US2285121A
Cited
US2276740A
Cited
US2358747A
Cited
US2337130A
Cited
US2459906A
Cited
US2479153A
Cited
US2567018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |