US3488247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof deck covering
Assignee: Armstrong World Industries Inc
•
Filing: 1965-10-06
•
Granted: 1970-01-06
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Collins E Bushnell Jr
- 👤 Lewis R Dunn
- 👤 Lewis W Eckert
- 👤 Anthony J Zigment
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:16
CPC Classifications
E; E04; E04D; E04D11/00; E04D11/02; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1383726A
Cited
US2019647A
Cited
US2167592A
Cited
US2298983A
Cited
US2472081A
Cited
US2750314A
Cited
US2668789A
Cited
US2698788A
Cited
FR1101066A
Cited
US2861525A
Cited
US2961029A
Cited
US2880090A
Cited
US3034944A
Cited
GB922746A
Cited
US3150031A
Cited
US3132065A
Cited
GB960006A
Cited
US3270473A
Cited
US3328231A
Cited
US3328231B1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |