Patent US2911204A successfully refreshed from Google Patents.
US2911204A
Expired / Lapsed
US
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Tower packing block
Assignee: Individual
•
Filing: 1955-08-17
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Granted: 1959-11-03
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Expires: 1975-08-17
Abstract
No abstract record available.
Inventors
- 👤 Dolphus D Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:56
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/085; B; B01; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/32275; B01J2219/32293; B01J2219/324; B01J2219/32425; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE229999C
Cited
US812667A
Cited
US1887704A
Cited
US2098667A
Cited
CH233171A
Cited
GB582630A
Cited
FR1050027A
Cited
US2651515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |