US981271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic time-valve.
Assignee: IRVIN SILVERBERG
•
Filing: 1909-10-06
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Granted: 1911-01-10
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Expires: 1929-10-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:28
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/16; A01G25/165; F; F16; F16K; F16K51/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
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) | 1914-01-09 | 1914-07-11 | 1915-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-09 | 1918-07-11 | 1919-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-09 | 1922-07-11 | 1923-01-10 | $7700.00 | Window Closed / Lapsed |