US2229484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1937-01-28
•
Granted: 1941-01-21
•
Expires: 1957-01-28
Abstract
No abstract record available.
Inventors
- 👤 Workman Ernest Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:02
CPC Classifications
B; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/34; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5102; Y10T29/53; Y10T29/53709; Y10T29/53783; Y10T29/53787
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) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |