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Patent US2698558A successfully refreshed from Google Patents.
US2698558A
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Method of preparing felted products containing glass fibers
Assignee: Hawley Products Co
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Filing: 1952-01-17
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Granted: 1955-01-04
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Expires: 1972-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hawley Don Milligan
- 👤 John C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:00
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; Y; Y10; Y10S; Y10S264/00; Y10S264/53; Y10S264/75
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1630424A
Cited
GB363716A
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GB497059A
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US2357392A
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US2383066A
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US2504744A
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US2531504A
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US2477555A
Cited
US2566960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |