US2029611A
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US
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Assignee: United Engineers and Constructors Inc
•
Filing: 1934-05-10
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Granted: 1936-02-04
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Expires: 1954-05-10
Abstract
No abstract record available.
Inventors
- 👤 Walter L Chewning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:32
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; B01D29/11; B01D29/13; B01D29/15; B01D29/62; B01D29/64; B01D29/70
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) | 1939-02-03 | 1939-08-05 | 1940-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-02-03 | 1943-08-05 | 1944-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-02-03 | 1947-08-05 | 1948-02-04 | $7700.00 | Window Closed / Lapsed |