US3421050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for suspending particles in a conduit
Assignee: Transcontinental Gas Pipeline Corp
•
Filing: 1965-04-23
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Granted: 1969-01-07
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Expires: 1985-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Topper
- 👤 William W Cofield
- 👤 Amos F Williams
- 👤 Raymond C Foster
- 👤 Herman N Woebcke
- 👤 Albert W Goldman
- 👤 Alexander Kusko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:53
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/053; B05B5/0533; B05B5/16; B05B5/1683; B65; B65G; B65G53/00; B65G53/34; B65G53/52; B65G53/521; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |