Patent CA969744A successfully refreshed from Google Patents.
Patent US2903173A successfully refreshed from Google Patents.
US734993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-regulator.
Assignee: ANDREW S BURT
•
Filing: 1903-05-06
•
Granted: 1903-07-28
•
Expires: 1923-05-06
Abstract
No abstract record available.
Inventors
- 👤 John C Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:46
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7808
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1906-07-27 | 1907-01-26 | 1907-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-07-27 | 1911-01-26 | 1911-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-07-27 | 1915-01-26 | 1915-07-28 | $7700.00 | Window Closed / Lapsed |