US1536081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable valve-operating apparatus
Assignee: Individual
•
Filing: 1920-01-02
•
Granted: 1925-05-05
•
Expires: 1940-01-02
Abstract
No abstract record available.
Inventors
- 👤 Peter P Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:33
CPC Classifications
B; B60; B60K; B60K25/00; B60K25/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19028
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) | 1928-05-04 | 1928-11-03 | 1929-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-04 | 1932-11-03 | 1933-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-04 | 1936-11-03 | 1937-05-05 | $7700.00 | Window Closed / Lapsed |