Patent US3278787A successfully refreshed from Google Patents.
US3278787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulb assembly
Assignee: Individual
•
Filing: 1963-07-12
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Granted: 1966-10-11
•
Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Roberto L Bustamante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:59
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A BULB ASSEMBLY COMPRISING A PAIR OF GLASS ENVELOPES CONNECTED END TO END BY MEANS OF AN INSULATING PRESSURE FOOTING, SAID INSULATING PRESSURE FOOTING HAVING AN OUTWARDLY EXTENDING ANNULUS PORTION, A PAIR OF ANNULUS PLATES, SAID ANNULUS PLATES BEING DISPOSED ON EACH SIDE OF SAID OUTWARDLY EXTENDING ANNULUS PORTION, A PAIR OF ELECTRICAL FILAMENTS, ONE OF SAID ELECTRICAL FILAMENTS BEING DISPOSED IN EACH GLASS ENVELOPE,
Claim 2
Dependent Claim
65 words
A BULB ASSEMBLY COMPRISING A PAIR OF GLASS ENVELOPES CONNECTED END TO END BY MEANS OF AN INSULATING PRESSURE FOOTING, SAID INSULATING PRESSURE FOOTING HAVING AN OUTWARDLY EXTENDING ANNULUS PORTION, A PAIR OF ANNULUS PLATES, SAID ANNULUS PLATES BEING DISPOSED ON EACH SIDE OF SAID OUTWARDLY EXTENDING ANNULUS PORTION, A PAIR OF ELECTRICAL FILAMENTS, ONE OF SAID ELECTRICAL FILAMENTS BEING DISPOSED IN EACH GLASS ENVELOPE,
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |