US3523884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making wall structure impervious to moisture
Assignee: Systron Donner Corp
•
Filing: 1968-05-10
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Granted: 1970-08-11
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Expires: 1988-05-10
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Bagno
- 👤 Goldie Bagno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/70; E04B1/7007; C; C04; C04B; C04B41/00; C04B41/45; C04B41/4505
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371123A
Cited
US969921A
Cited
GB420402A
Cited
US2104812A
Cited
US2157180A
Cited
US2273036A
Cited
US2870072A
Cited
US3019384A
Cited
US3340170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |