Patent US3522684A successfully refreshed from Google Patents.
US3522684A
Expired / Lapsed
US
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Water barrier coupling means for vertical mullions
Assignee: Individual
•
Filing: 1969-01-03
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Granted: 1970-08-04
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Expires: 1989-01-03
Abstract
No abstract record available.
Inventors
- 👤 Abraham Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:20
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/88; E04B2/96; E04B2/965; F; F16; F16B; F16B2200/00; F16B2200/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA665909A
Cited
US2390000A
Cited
US2916108A
Cited
US3206901A
Cited
CH379843A
Cited
FR1271188A
Cited
US3119635A
Cited
US3223209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |