US3437557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for preventing shutdown of a nuclear reactor plant when the load on a turbine driven thereby decreases suddenly
Assignee: ABB Norden Holding AB
•
Filing: 1967-04-03
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Granted: 1969-04-08
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Arto Kaipainen
- 👤 Ake Rullgard
- 👤 Carl Gosta Skygge
- 👤 Cnut Sundqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
G; G21; G21D; G21D5/00; G21D5/04; G21D5/06; G21C; G21C9/00; G21D3/00; G21D3/04; G21D3/08; G21D3/10; G21D3/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB796164A
Cited
US3052615A
Cited
GB878097A
Cited
US2999059A
Cited
GB992033A
Cited
US3128233A
Cited
US3226299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |