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US1660249A
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Assignee: Proctor and Schwartz Inc
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Filing: 1924-02-29
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Granted: 1928-02-21
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Expires: 1944-02-29
Abstract
No abstract record available.
Inventors
- 👤 William F Bokum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
G; G01; G01G; G01G19/00
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) | 1931-02-20 | 1931-08-22 | 1932-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-20 | 1935-08-22 | 1936-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-20 | 1939-08-22 | 1940-02-21 | $7700.00 | Window Closed / Lapsed |