US3510351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for etching and cleaning of objects and plants,particularly tube systems and boiler plants,consisting of iron or steel
Assignee: Siemens AG
•
Filing: 1965-11-26
•
Granted: 1970-05-05
•
Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Paul Van Dillen
- 👤 Eva Vollmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:37
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/24; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/265; C23G1/02; C23G1/08; C23G1/088; F; F28; F28G; F28G9/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2362284A
Cited
US1554483A
Cited
US2318559A
Cited
US2817606A
Cited
US2992997A
Cited
US3085915A
Cited
US3130153A
Cited
US3132975A
Cited
US3003898A
Cited
US3166444A
Cited
US3369934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |