Patent US2877124A successfully refreshed from Google Patents.
US2877124A
Expired / Lapsed
US
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Glass composition
Assignee: Owens Corning
•
Filing: 1955-11-25
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Granted: 1959-03-10
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Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 William W Welsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:49
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091; C03C3/093; C03C13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY BY WEIGHT:
Claim 2
Dependent Claim
7 words
A GLASS COMPOSITION CONSISTING ESSENTIALLY BY WEIGHT:
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |