US2833526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator head construction
Assignee: Griscom Russell Co
•
Filing: 1955-06-22
•
Granted: 1958-05-06
•
Expires: 1975-06-22
Abstract
No abstract record available.
Inventors
- 👤 Philip S Otten
- 👤 Dewey R Bosley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:10
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/021; F22B17/00; F22B17/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US244039A
Cited
US575207A
Cited
GB189605391A
Cited
US686313A
Cited
US1782430A
Cited
US2643862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |