US1491077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve-operating means
Assignee: Individual
•
Filing: 1922-11-27
•
Granted: 1924-04-22
•
Expires: 1942-11-27
Abstract
No abstract record available.
Inventors
- 👤 George N Beerworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/60; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/2051; Y10T74/20576; Y10T74/20732; Y10T74/20738
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) | 1927-04-22 | 1927-10-22 | 1928-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-22 | 1931-10-22 | 1932-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-22 | 1935-10-22 | 1936-04-22 | $7700.00 | Window Closed / Lapsed |