Patent US1660728A successfully refreshed from Google Patents.
US1660728A
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Assignee: Individual
•
Filing: 1923-10-29
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Granted: 1928-02-28
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Expires: 1943-10-29
Abstract
No abstract record available.
Inventors
- 👤 Stokes Charles Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
B; B60; B60B; B60B7/00; B60B7/0013; B60B2310/00; B60B2310/30; B60B2310/305; B60B2900/00; B60B2900/50; B60B2900/541; B60Y; B60Y2200/00; B60Y2200/10; B60Y2200/11
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) | 1931-02-27 | 1931-08-29 | 1932-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-27 | 1935-08-29 | 1936-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-27 | 1939-08-29 | 1940-02-28 | $7700.00 | Window Closed / Lapsed |