US1361636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating-valve for drill-feeding means
Assignee: Ingersoll Rand Co
•
Filing: 1919-10-23
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Granted: 1920-12-07
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Expires: 1939-10-23
Abstract
No abstract record available.
Inventors
- 👤 Harold I Stage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826
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) | 1923-12-07 | 1924-06-07 | 1924-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-07 | 1928-06-07 | 1928-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-07 | 1932-06-07 | 1932-12-07 | $7700.00 | Window Closed / Lapsed |