Patent US1632905A successfully refreshed from Google Patents.
US1632905A
Expired / Lapsed
US
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System for automatic valve control
Assignee: BARTLETT HAYWARD Co
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Filing: 1923-01-04
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Granted: 1927-06-21
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Expires: 1943-01-04
Abstract
No abstract record available.
Inventors
- 👤 James S Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/22; C10J3/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86397; Y10T137/86405
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) | 1930-06-20 | 1930-12-20 | 1931-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-06-20 | 1934-12-20 | 1935-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-06-20 | 1938-12-20 | 1939-06-21 | $7700.00 | Window Closed / Lapsed |