Patent US2819490A successfully refreshed from Google Patents.
US2819490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making one piece hollow articles of thermo plastic material
Assignee: DORALAINE Corp
•
Filing: 1952-03-19
•
Granted: 1958-01-14
•
Expires: 1972-03-19
Abstract
No abstract record available.
Inventors
- 👤 Mark L Froot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:41
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/4236; B29C49/42362; B29C48/00; B29C48/001; B29C48/0022; B29C49/02; B29C49/04; B29C49/28; B29C49/30; B29C49/36; B29C2793/00; B29C2793/0027; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1527559A
Cited
US1527557A
Cited
US1865967A
Cited
US2041788A
Cited
US1959428A
Cited
US2230188A
Cited
US2331687A
Cited
US2290129A
Cited
US2657431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |