US2055587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Gulf Research and Development Co
•
Filing: 1935-10-11
•
Granted: 1936-09-29
•
Expires: 1955-10-11
Abstract
No abstract record available.
Inventors
- 👤 Reginald J S Pigott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:40
CPC Classifications
F; F04; F04B; F04B23/00; F04B23/04; F04B23/08; F04B23/12; F04C; F04C2/00; F04C2/08; F04C2/10; Y; Y10; Y10S; Y10S415/00; Y10S415/912
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) | 1939-09-29 | 1940-03-30 | 1940-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-29 | 1944-03-30 | 1944-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-29 | 1948-03-30 | 1948-09-29 | $7700.00 | Window Closed / Lapsed |