US2609831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure flowmeter
Assignee: Automatic Temperature Control Co Inc
•
Filing: 1948-01-10
•
Granted: 1952-09-09
•
Expires: 1968-01-10
Abstract
No abstract record available.
Inventors
- 👤 William D Macgeorge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22; G01F1/24; G01F1/26; G01F1/34; G01F1/36; G01F1/38; G01F1/383; G01F1/40; G01F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE361373C
Cited
US1487402A
Cited
US1677834A
Cited
GB225352A
Cited
US1994336A
Cited
US1778583A
Cited
US2035472A
Cited
US2069959A
Cited
US2059152A
Cited
US2092019A
Cited
US2322498A
Cited
US2427866A
Cited
US2451757A
Cited
US2459689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |