Patent US1868087A successfully refreshed from Google Patents.
US1868087A
Expired / Lapsed
US
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Wave motor
Assignee: Individual
•
Filing: 1922-08-08
•
Granted: 1932-07-19
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Expires: 1942-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert S Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:56
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/12; F03B13/14; F03B13/141; F03B13/144; F03B13/145; E; E02; E02B; E02B9/00; E02B9/08; Y; Y02; Y02E; Y02E10/00; Y02E10/30
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) | 1935-07-19 | 1936-01-18 | 1936-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-19 | 1940-01-18 | 1940-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-19 | 1944-01-18 | 1944-07-19 | $7700.00 | Window Closed / Lapsed |