US2701219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous mastics products
Assignee: Beazer East Inc
•
Filing: 1951-04-24
•
Granted: 1955-02-01
•
Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Fair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:57
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
AN ARTICLE OF MANUFACTURE CONSISTING OF AN IMPROVED, COHERENT, SELF-SUSTAINING, PRE-FABRICATED, FLEXIBLE, BITUMINOUS MASTIC SHEET HAVING AT LEAST IN ITS SERVICE-EXPOSED SURFACES A UNIFORMLY HIGH CONCENTRATION OF COAL-DIGESTION PITCH NON-FLOWING IN SAID SURFACES IN VERTICAL POSITION AT HIGHEST ATMOSPHERIC TEMPERATURES AND FOR PREVENTING SURFACE-CRACKING IN SAID SHEET ON SUDDEN BENDING OF FROM MECHANICAL SHOCK.
References Cited (Backward Citations)
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US980664A
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US1300550A
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US2354593A
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US2395041A
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US2396690A
Cited
US2472100A
Cited
US2455923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |