Patent US2705136A successfully refreshed from Google Patents.
US2705136A
Expired / Lapsed
US
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Bubble cap riser
Assignee: FRITZ W GLITSCH AND SONS Inc
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Filing: 1951-07-09
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Granted: 1955-03-29
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Expires: 1971-07-09
Abstract
No abstract record available.
Inventors
- 👤 Hans C Glitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:29
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20; B01D3/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE667973C
Cited
US1965549A
Cited
GB447800A
Cited
US2333890A
Cited
US2391502A
Cited
US2488249A
Cited
US2510586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |