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US1940946A
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Material control apparatus and method
Assignee: Hamilton Beauchamp & Woodworth
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Filing: 1929-01-16
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Granted: 1933-12-26
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Expires: 1949-01-16
Abstract
No abstract record available.
Inventors
- 👤 Edward M Hamilton
- 👤 Selim E Woodworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/03; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0352; Y10T137/0363; Y10T137/2496; Y10T137/2499; Y10T137/6851; Y10T137/6966; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/8158; Y10T137/8175; Y10T137/8225; Y10T137/8275; Y10T137/8292
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) | 1936-12-25 | 1937-06-26 | 1937-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-25 | 1941-06-26 | 1941-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-25 | 1945-06-26 | 1945-12-26 | $7700.00 | Window Closed / Lapsed |