US2784933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service tau
Assignee: Dresser Industries Inc
•
Filing: 1951-07-27
•
Granted: 1957-03-12
•
Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 Newell Frederick Thomas
- 👤 Thomas J O'hargan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/02; F16K1/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE17022E
Cited
US212875A
Cited
US222217A
Cited
US558034A
Cited
US147060A
Cited
US96394A
Cited
GB190213484A
Cited
US1172298A
Cited
US1268511A
Cited
GB344172A
Cited
FR734651A
Cited
US2321597A
Cited
US2269695A
Cited
US2336173A
Cited
US2447510A
Cited
US2608201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |