US3052245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning heat exchanger tube bundles
Assignee: Texaco Inc
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Filing: 1960-03-02
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Granted: 1962-09-04
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Expires: 1980-03-02
Abstract
No abstract record available.
Inventors
- 👤 Richard E Nagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:56
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/14; A47L15/18; A47L15/22; A47L15/23; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/0433; F; F28; F28G; F28G1/00; F28G1/16; F28G1/163; F28G15/00; F28G15/02; F28G15/04; F28G3/00; F28G3/16
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |